CN105115561A - Quantitative loop volume measurement device and measurement method - Google Patents
Quantitative loop volume measurement device and measurement method Download PDFInfo
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- CN105115561A CN105115561A CN201510623441.1A CN201510623441A CN105115561A CN 105115561 A CN105115561 A CN 105115561A CN 201510623441 A CN201510623441 A CN 201510623441A CN 105115561 A CN105115561 A CN 105115561A
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Abstract
The invention discloses a quantitative loop volume measurement device and a measurement method. The quantitative loop volume measurement device comprises a quantitative loop, a six-way valve, a liquid source, a liquid injection pump, a liquid outlet, a gas source, a gas injection pump, a gas outlet and a weighing mechanism; the liquid injection pump and the liquid outlet are connected with the six-way valve, so that liquid can be added into the quantitative loop through the six-way valve, and the six-way valve can form a liquid channel with the quantitative loop and the liquid outlet; the gas injection pump and the gas outlet are connected with the six-way valve, so that gas can be added into the quantitative loop through the six-way valve, and the six-way valve can form a gas channel with the quantitative loop and the gas outlet; the quantitative loop is connected with the six-way valve, and the six-way valve can switch the flow ways, so that the quantitative loop can be switched between the liquid channel and the gas channel. According to the quantitative loop volume measurement device and a measurement method, the volume of the quantitative loop is measured through the liquid drainage method, the measurement accuracy is high, the structure is simple, operation is convenient, and the measurement device and measurement method are suitable for the quantitative loops of different types.
Description
Technical field
The invention belongs to chemico-analytic injector field, especially relate to a kind of quantitative loop volume calibration device and calibration method.
Background technology
High performance liquid chromatography (highperformanceliquidchromatography) method is a kind of efficient separate analytical technique being widely used in chemical analysis and Pharmaceutical Analysis field, the different component of testing sample can be separated and give qualitative and quantitative analysis.The range of application of high performance liquid chromatography is wider, and quantitative loop is quantitative sample injection instrument conventional in the method, quantitative loop kind used is in the market a lot, the volume number of discriminating mainly by instrument is demarcated of its volume, but often there is deviation with the volume of the reality of quantitative loop in this demarcation volume number, the analysis design mothod high to some accuracy requirements impacts, but does not have efficient simple quantitative loop capacity detecting method at present, causes adverse influence to experimentation.
Summary of the invention
For above-mentioned technical matters, the invention provides a kind of quantitative loop volume calibration device and calibration method, can be efficient, examine and determine quantitative loop volume fast, structure is simple, easy to operate.
The technical scheme that the present invention is complete is:
A kind of quantitative loop volume calibration device, comprise quantitative loop, six-way valve, fluid supply, liquid injection pump, liquid outlet, gas source, gas injection pump, gas vent, weighing mechanism, is characterized in that,
Described quantitative loop is connected with six-way valve,
Described liquid injection pump and liquid outlet are connected with two mouths of six-way valve respectively, and liquid injection pump is connected with fluid supply simultaneously, liquid can be joined in quantitative loop by six-way valve, and form fluid path with quantitative loop and liquid outlet;
Described gas injection pump and gas vent are connected with two mouths of six-way valve respectively, gas injection pump is gentle body tied to source simultaneously, gas can be joined in quantitative loop by six-way valve, and form gas passage with quantitative loop and gas vent, described gas vent leads to weighing mechanism
The changeable stream of described six-way valve, makes described quantitative loop switch between fluid path and gas passage.
Described liquid is incompressible liquid.
Preferably, described liquid is water, oil or mercury.
Described gas is the one in air, nitrogen, inert gas, or its mixed gas.
Described weighing mechanism is the one in Intelligent electronic balance, measuring cup or graduated cylinder.
Utilize said apparatus to carry out a method for quantitative loop volume calibration, it is characterized in that, comprise the steps:
(1) six of six-way valve outlet orders are demarcated as No. 1 mouth successively, No. 2 mouths, No. 3 mouths, No. 4 mouths, No. 5 mouths, No. 6 mouths, make liquid injection pump connect No. 1 mouth of six-way valve, liquid outlet connects No. 6 mouths, and quantitative loop two ends connect No. 3 mouths and No. 4 mouths respectively, make liquid injection pump, quantitative loop and liquid outlet form fluid path;
(2) liquid injection pump passes through No. 1 mouth by the to be measured quantitative loop of liquid injection between No. 2 mouths and No. 5 mouths;
(3) switch stream, make gas injection pump, quantitative loop and gas vent form path;
(4) gas injection pump passes through No. 3 mouths by gas inject, and is released by the liquid in quantitative loop to be measured, is discharged, towards weighing mechanism by the gas vent of connection No. 4 mouths;
(5) calculate the liquid volume in weighing mechanism, obtain the volume of volume loop.
Preferably, described step (5) is, reads the liquid weight M discharged by No. 4 mouths by weighing by weighing mechanism
1, measure N time, calculate its mean value, N be more than or equal to 1 natural number, then calculate the liquid volume V of discharge according to the density of liquid under this temperature conditions
1, as quantitative loop volume;
Or, by the container with volume markings, directly obtain the liquid volume V discharged by No. 4 mouths
1, measure N time, calculate its mean value, N be more than or equal to 1 natural number, as quantitative loop volume.
Preferably, described step (5) is: by the container with volume markings, directly obtains the liquid volume V discharged by No. 4 mouths
1, obtain remaining in liquid volume V in six-way valve simultaneously
0, measure N time, calculate its mean value, N be more than or equal to 1 natural number, obtain quantitative loop volume V=V
1-V
0.
Preferably, described V
0computing method be: the joint of six-way valve dismantle by dry before and after weightometer calculate the weight M remaining in liquid in six-way valve
0, measure N time, calculate its mean value, N be more than or equal to 1 natural number, then calculate liquid volume V according to the density of liquid under this temperature conditions
0.
Preferably, described step (5) is: read by weighing mechanism the liquid weight M discharged by No. 4 mouths by weighing
1, the joint of six-way valve dismantle by dry before and after weightometer calculate the weight M remaining in liquid in six-way valve
0, obtain the weight M=M of liquid in quantitative loop
1-M
0, measure N time, calculate its mean value, N be more than or equal to 1 natural number, then calculate liquid volume according to the density of liquid under this temperature conditions, i.e. quantitative loop volume.
The present invention utilizes the volume of discharging liquid method to quantitative loop to measure, and accuracy of measurement is high, and structure is simple, easy to operate, is applicable to the quantitative loop of different model.
Accompanying drawing explanation
Structural representation when Fig. 1 is apparatus of the present invention formation fluid path.
Structural representation when Fig. 2 is apparatus of the present invention formation gas passage.
In figure: 1 is No. 1 mouth, 2 is No. 2 mouths, and 3 is No. 3 mouths, and 4 is No. 4 mouths, and 5 is No. 5 mouths, and 6 is No. 6 mouths, and 7 is six-way valve, and 8 is quantitative loop, and 9 is water injection pump, and 10 is water out, and 11 is air sparging pump, and 12 is air out.
Embodiment
Below in conjunction with embodiment, the present invention will be further described.
A kind of quantitative loop volume calibration device, comprise quantitative loop 8, six-way valve 7, water source, water injection pump 9, water out 10, source of the gas, air sparging pump 11, air out 12, weighing mechanism, described water injection pump is connected with six-way valve with pure water outlet, water injection pump is connected with source of purified water simultaneously, can pure water be joined in quantitative loop by six-way valve, and go out interruption-forming pure water path with quantitative loop and pure water, described air sparging pump and air out and six-way valve, air sparging pump is connected with air-source simultaneously, can air be joined in quantitative loop by six-way valve, and form air flue with quantitative loop and air out, described air out leads to weighing mechanism, described quantitative loop is connected with six-way valve, the changeable stream of described six-way valve, described quantitative loop is switched between pure water path and air flue.
Specific works mode is:
Six outlet orders of six-way valve are followed successively by No. 1 mouth 1, No. 2 mouths 2, No. 3 mouths 3, No. 4 mouths 4, No. 5 mouths 5, No. 6 mouths 6, make water injection pump connect No. 1 mouth of six-way valve, water injection pump are communicated with No. 1 mouth, pure water outlet connection No. 6 mouths, quantitative loop two ends connect No. 3 mouths and No. 4 mouths respectively, make water injection pump, and quantitative loop and pure water go out interruption-forming pure water path; As shown in Figure 1,
Water injection pump passes through No. 1 mouth by the to be measured quantitative loop of pure water injection between No. 2 mouths and No. 5 mouths;
Switch stream, make air sparging pump, quantitative loop and air out form path, as shown in Figure 2;
Air sparging pump passes through No. 3 mouths by air Injection, and is released by the pure water in quantitative loop to be measured, is discharged, towards weighing mechanism by the air out of connection No. 4 mouths;
In one preferred embodiment, described weighing mechanism is Intelligent electronic balance, weighs by it pure water weight M discharged by No. 4 mouths
1, repeat N time, calculated weight mean value, then calculate the pure water volume V of discharge according to the density of pure water under this temperature conditions
1.
Further preferred, the joint of six-way valve is dismantled and calculates by weightometer before and after drying the weight M remaining in pure water in six-way valve
0, obtain the weight M=M of water in quantitative loop
1-M
0, repeat N time, calculated weight mean value.Water volume is calculated again, i.e. quantitative loop volume according to the density of water under this temperature conditions.
Another preferred embodiment in, by the container with volume markings as graduated cylinder or measuring cup, repeat N time, calculating is averaged.Directly obtain the pure water volume V discharged by No. 4 mouths
1as the volume of quantitative loop.
Further preferred, the joint of six-way valve is dismantled and calculates by weightometer before and after drying the weight M remaining in pure water in six-way valve
0, repeat N time, calculated weight mean value.Water volume V is calculated again according to the density of water under this temperature conditions
0, by V
1-V
0as the volume of quantitative loop.
Claims (10)
1. a quantitative loop volume calibration device, comprises quantitative loop, six-way valve, fluid supply, liquid injection pump, liquid outlet, gas source, gas injection pump, gas vent, and weighing mechanism, is characterized in that,
Described quantitative loop is connected with six-way valve,
Described liquid injection pump and liquid outlet are connected with two mouths of six-way valve respectively, and liquid injection pump is connected with fluid supply simultaneously, liquid can be joined in quantitative loop by six-way valve, and form fluid path with quantitative loop and liquid outlet;
Described gas injection pump and gas vent are connected with two mouths of six-way valve respectively, gas injection pump is gentle body tied to source simultaneously, gas can be joined in quantitative loop by six-way valve, and form gas passage with quantitative loop and gas vent, described gas vent leads to weighing mechanism
The changeable stream of described six-way valve, makes described quantitative loop switch between fluid path and gas passage.
2. device as claimed in claim 1, it is characterized in that, described liquid is incompressible liquid.
3. device as claimed in claim 2, it is characterized in that, described liquid is water, oil or mercury.
4. device as claimed in claim 1, it is characterized in that, described gas is the one in air, nitrogen, inert gas, or its mixed gas.
5. device as claimed in claim 1, it is characterized in that, described weighing mechanism is the one in Intelligent electronic balance, measuring cup or graduated cylinder.
6. utilize device described in any one of claim 1-5 to carry out a method for quantitative loop volume calibration, it is characterized in that, comprise the steps:
(1) six of six-way valve outlet orders are demarcated as No. 1 mouth successively, No. 2 mouths, No. 3 mouths, No. 4 mouths, No. 5 mouths, No. 6 mouths, make liquid injection pump connect No. 1 mouth of six-way valve, liquid outlet connects No. 6 mouths, and quantitative loop two ends connect No. 3 mouths and No. 4 mouths respectively, make liquid injection pump, quantitative loop and liquid outlet form fluid path;
(2) liquid injection pump passes through No. 1 mouth by the to be measured quantitative loop of liquid injection between No. 2 mouths and No. 5 mouths;
(3) switch stream, make gas injection pump, quantitative loop and gas vent form path;
(4) gas injection pump passes through No. 3 mouths by gas inject, and is released by the liquid in quantitative loop to be measured, is discharged, towards weighing mechanism by the gas vent of connection No. 4 mouths;
(5) calculate the liquid volume in weighing mechanism, obtain the volume of volume loop.
7. method as claimed in claim 6, it is characterized in that, described step (5) is, reads the liquid weight M discharged by No. 4 mouths by weighing by weighing mechanism
1, measure N time, calculate its mean value, N be more than or equal to 1 natural number, then calculate the liquid volume V of discharge according to the density of liquid under this temperature conditions
1, as quantitative loop volume;
Or, by the container with volume markings, directly obtain the liquid volume V discharged by No. 4 mouths
1, measure N time, calculate its mean value, N be more than or equal to 1 natural number, as quantitative loop volume.
8. method as claimed in claim 6, it is characterized in that, described step (5) is: by the container with volume markings, directly obtains the liquid volume V discharged by No. 4 mouths
1, obtain remaining in liquid volume V in six-way valve simultaneously
0, measure N time, calculate its mean value, N be more than or equal to 1 natural number, obtain quantitative loop volume V=V
1-V
0.
9. method as claimed in claim 8, is characterized in that, described V
0computing method be: the joint of six-way valve dismantle by dry before and after weightometer calculate the weight M remaining in liquid in six-way valve
0, measure N time, calculate its mean value, N be more than or equal to 1 natural number, then calculate liquid volume V according to the density of liquid under this temperature conditions
0.
10. method as claimed in claim 6, it is characterized in that, described step (5) is: read by weighing mechanism the liquid weight M discharged by No. 4 mouths by weighing
1, the joint of six-way valve dismantle by dry before and after weightometer calculate the weight M remaining in liquid in six-way valve
0, obtain the weight M=M of liquid in quantitative loop
1-M
0, measure N time, calculate its mean value, N be more than or equal to 1 natural number, then calculate liquid volume according to the density of liquid under this temperature conditions, i.e. quantitative loop volume.
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| CN201510623441.1A CN105115561B (en) | 2015-09-25 | 2015-09-25 | A kind of quantitative loop volume calibration device and calibration method |
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| CN201510623441.1A CN105115561B (en) | 2015-09-25 | 2015-09-25 | A kind of quantitative loop volume calibration device and calibration method |
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| CN105115561B CN105115561B (en) | 2018-08-14 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109030704A (en) * | 2018-07-20 | 2018-12-18 | 青岛盛瀚色谱技术有限公司 | Ion chromatograph sampling volume measurement device and sampling volume measuring method |
| CN114636456A (en) * | 2022-05-18 | 2022-06-17 | 江苏省计量科学研究院(江苏省能源计量数据中心) | Quantitative ring volume calibration system and method |
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| CN204241061U (en) * | 2014-12-10 | 2015-04-01 | 北京金旗华瑞科技发展有限公司 | Tank wagon volume calibration device |
| CN104501899A (en) * | 2014-12-27 | 2015-04-08 | 重庆钇林达科技有限公司 | Device and method for precise measurement of volume and density of object |
| WO2015048913A1 (en) * | 2013-10-01 | 2015-04-09 | Laurent De Schoulepnikoff | Method for the measurement of the volumetric capacity of a textured surface and device for performing the said method |
| CN205066858U (en) * | 2015-09-25 | 2016-03-02 | 山东省计量科学研究院 | Ration ring volume calibrating installation |
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2015
- 2015-09-25 CN CN201510623441.1A patent/CN105115561B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202793504U (en) * | 2012-09-28 | 2013-03-13 | 张金明 | Device capable of measuring volume of container |
| WO2015048913A1 (en) * | 2013-10-01 | 2015-04-09 | Laurent De Schoulepnikoff | Method for the measurement of the volumetric capacity of a textured surface and device for performing the said method |
| CN204241061U (en) * | 2014-12-10 | 2015-04-01 | 北京金旗华瑞科技发展有限公司 | Tank wagon volume calibration device |
| CN104501899A (en) * | 2014-12-27 | 2015-04-08 | 重庆钇林达科技有限公司 | Device and method for precise measurement of volume and density of object |
| CN205066858U (en) * | 2015-09-25 | 2016-03-02 | 山东省计量科学研究院 | Ration ring volume calibrating installation |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109030704A (en) * | 2018-07-20 | 2018-12-18 | 青岛盛瀚色谱技术有限公司 | Ion chromatograph sampling volume measurement device and sampling volume measuring method |
| CN109030704B (en) * | 2018-07-20 | 2020-08-18 | 青岛盛瀚色谱技术有限公司 | Ion chromatograph sample injection volume determination device and sample injection volume determination method |
| CN114636456A (en) * | 2022-05-18 | 2022-06-17 | 江苏省计量科学研究院(江苏省能源计量数据中心) | Quantitative ring volume calibration system and method |
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