CN111521509A - Apparatus for measuring concentration of gas in solution - Google Patents
Apparatus for measuring concentration of gas in solution Download PDFInfo
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- CN111521509A CN111521509A CN202010318887.4A CN202010318887A CN111521509A CN 111521509 A CN111521509 A CN 111521509A CN 202010318887 A CN202010318887 A CN 202010318887A CN 111521509 A CN111521509 A CN 111521509A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/36—Analysing materials by measuring the density or specific gravity, e.g. determining quantity of moisture
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention provides a device for measuring the concentration of gas in a solution, which is suitable for measuring the concentration of gas dissolved in the solution. The containing groove is connected with an input end and an output end, wherein the solution is conveyed into the containing groove through the input end and conveyed out of the containing groove through the output end. The heat insulation layer covers the containing groove to maintain the temperature of the solution in the containing groove. The weighing device is used for bearing the containing groove and measuring the weight of the solution stored in the containing groove. The calculating device is electrically connected with the weighing device, receives the weight of the liquid by the weighing device, and calculates the gas concentration in the solution according to the weight of the liquid, so as to quickly and accurately measure the gas concentration in the solution.
Description
Technical Field
The invention relates to a device for measuring the concentration of gas in a solution, which can quickly and accurately measure the concentration of gas in liquid.
Background
In making a gas solution, the gas is typically dissolved in water by selecting an appropriate device or method depending on the solubility of the gas in water, such as a gas-drainage method, an upward-gas-discharge method, or a downward-gas-discharge method. The gas concentration of the solution needs to be measured continuously during the dissolution process to determine whether to continue dissolving more gas into the water so that the gas concentration in the solution reaches the desired value.
When measuring the concentration of a gas in a solution, it is often necessary to take the solution out and measure it by acid-base titration or refractometry. However, when the solution is taken out, the gas originally dissolved in the solution may leave the solution and affect the accuracy of the measurement. In addition, if the gas itself is corrosive or toxic, it may damage the measuring instrument or adversely affect the human body.
Disclosure of Invention
In order to solve the above problems of the conventional structure, the present invention provides a novel apparatus for measuring the concentration of a gas dissolved in a solution, which is suitable for measuring the concentration of a gas dissolved in a solution without taking out the solution during measurement, thereby improving the accuracy and efficiency of measurement and preventing the gas in the solution from damaging the measuring instrument or human body.
An objective of the present invention is to provide a device for measuring the concentration of a gas in a solution, which is used to connect to a storage tank or a device for increasing the concentration of a gas in a solution, and can measure the concentration of a gas in a solution quickly and accurately during the process of increasing the concentration of a gas in a solution, so as to improve the efficiency and convenience of increasing the concentration of a gas in a solution.
An objective of the present invention is to provide a device for measuring the concentration of a gas in a solution, in which a containing tank is disposed on a weighing device, the weighing device is used to measure the weight of the solution, and calculate the density of the solution according to the volume of the containing space and the weight of the solution, so as to obtain the concentration of the gas dissolved in the solution.
An objective of the present invention is to provide a device for measuring a concentration of a gas in a solution, which includes a heat insulation layer covering a receiving tank to maintain a temperature of the solution in the receiving tank and prevent condensed water droplets from forming on an outer surface of the receiving tank, thereby improving an accuracy of measuring the concentration of the gas in the solution.
An objective of the present invention is to provide a device for measuring the concentration of a gas in a solution, wherein a computing device is electrically connected to a weighing device, the weighing device receives a weight of the solution, and calculates the concentration of the gas in the solution according to the weight of the solution. In addition, the computing device can also receive a solution temperature and calculate the gas concentration in the solution according to the solution weight and the solution temperature.
An object of the present invention is to provide a device for measuring the concentration of a gas in a solution, wherein a computing device stores a plurality of corresponding comparison tables of solution temperature, solution weight and gas concentration in the solution according to the types of the solution and the gas, selects one of the comparison tables according to the types of the solution and the gas, and calculates the gas concentration in the solution from the comparison table according to the solution temperature and the solution weight.
To achieve the above object, the present invention provides an apparatus for measuring the concentration of a gas dissolved in a solution, comprising: a containing groove which comprises a containing space for containing the solution; the input end is connected with the containing groove and conveys the solution to the containing space of the containing groove through the input end; the output end is connected with the containing groove and outputs the solution to the containing space of the containing groove through the output end; a thermal insulation layer covering the containing groove; a weighing device for bearing the containing groove and measuring the weight of the solution in the containing space of the containing groove to generate a solution weight; and a computing device electrically connected to the weighing device, for receiving the weight of the solution and calculating a gas concentration in the solution according to the weight of the solution.
The gas concentration measuring device in the solution is a programmable logic controller or a computer.
The device for measuring the concentration of the gas in the solution comprises a temperature measuring unit arranged in the accommodating groove and positioned in the accommodating space of the accommodating groove, and the temperature measuring unit is used for measuring the temperature of the solution in the accommodating groove so as to generate a solution temperature.
The gas concentration measuring device in the solution is characterized in that the computing device is electrically connected with the temperature measuring unit, the temperature measuring unit receives the temperature of the solution, and the gas concentration in the solution is calculated according to the temperature of the solution and the weight of the solution.
The device for measuring the concentration of the gas in the solution comprises a heat insulation box body, a weighing device and a containing groove.
The output end of the device is positioned above the input end and is arranged at the top of the containing groove.
The input end and the output end of the containing groove are connected with a storage groove, the solution in the storage groove is conveyed into the containing space of the containing groove through the input end, and the liquid in the containing space of the containing groove is conveyed back to the storage groove through the output end.
The input end and the output end of the containing groove are respectively connected with the storage groove through a hose.
The device for measuring the concentration of the gas in the solution comprises a pump piece which is in fluid connection with the input end of the containing groove and is used for conveying the solution in the storage groove to the containing groove.
The invention has the beneficial effects that: when the gas concentration in the solution is measured, the liquid does not need to be taken out, and the gas concentration measuring device can be connected with a storage tank for storing the solution or a gas concentration lifting device only, so that the gas concentration in the solution can be quickly and accurately obtained, and the gas in the solution can be prevented from damaging a measuring instrument or a human body.
The invention has the beneficial effects that:
when the gas concentration in the solution is measured, the gas concentration in the solution can be quickly and accurately obtained without taking out the liquid.
Drawings
FIG. 1 is a schematic view of a gas concentration measuring apparatus in a solution according to an embodiment of the present invention.
FIG. 2 is a schematic view of a gas concentration measuring apparatus in a solution according to another embodiment of the present invention.
FIG. 3 is a schematic structural diagram of an embodiment of a gas concentration measuring device in a solution of the present invention connected to a storage tank.
FIG. 4 is a schematic structural diagram of a storage tank connected to a gas concentration measuring device in a solution according to another embodiment of the present invention.
Description of reference numerals: 10-a gas concentration measuring device; 100-a gas concentration measuring device; 11-a receiving groove; 111-input terminal; 112-a containing space; 113-an output terminal; 115-temperature measuring unit 12-solution; 13-a thermally insulating layer; 14-a pump member; 15-a weighing device; 16-a hose; 17-an arithmetic device; 18-a storage tank; 19-heat insulation box body.
Detailed Description
Fig. 1 is a schematic structural diagram of an embodiment of a gas concentration measuring apparatus in a solution according to the present invention. As shown in the figure, the apparatus 10 for measuring the concentration of a gas dissolved in a solution 12 mainly includes a container 11, a thermal insulation layer 13, a weighing device 15 and a computing device 17, wherein the container 11 is connected to an input end 111 and an output end 113, and the solution 12 can be transported into the container 11 through the input end 111 and output from the output end 113 to the container 11.
The containing cavity 11 may be a closed cavity and includes a containing space 112 for containing the solution 12. The input end 111 and the output end 113 are fluidly connected to the accommodating space 112 of the accommodating tank 11, and input and output the solution 12 into and out of the accommodating space 112.
In an embodiment of the invention, the output end 113 may be located above the input end 111, for example, the input end 111 may be connected to the bottom of the receiving cavity 11, and the output end 113 is disposed at the top of the receiving cavity 11. When the volume of the solution 12 in the accommodating space 112 is larger than the volume of the accommodating space 112, the solution 12 is output from the output end 113 disposed at the top of the accommodating groove 11, so that the volume of the solution 12 in the accommodating groove 11 is kept constant.
Generally, the concentration of gas in the solution 12 is related to the density, and the concentration of gas in the solution 12 can be calculated from the density of the solution 12, for example, the density of ammonia decreases as the concentration increases. In an embodiment of the present invention, the volume of the accommodating space 112 of the accommodating tank 11 may be fixed, and the volume of the solution 12 stored in the accommodating space 112 is also kept constant, so that the density and the gas concentration of the solution 12 may be calculated by measuring the weight of the solution 12 in the accommodating tank 11.
Therefore, the present invention uses the weighing device 15 to carry the containing tank 11, and uses the weighing device 15 to measure the weight of the solution 12 in the containing space 112 of the containing tank 11 to generate a liquid weight, and then calculates the gas concentration in the solution 12 according to the liquid weight.
In addition, the temperature of the solution 12 also affects the density and, therefore, the estimated gas concentration of the solution 12. Therefore, the temperature of the solution 12 can be kept constant during the measurement process, for example, the temperature of the solution 12 entering the receiving tank 11 is kept at a fixed temperature, so as to improve the accuracy of measuring the gas concentration in the solution 12.
In another embodiment of the present invention, a temperature sensing unit 16 may be disposed in the accommodating slot 11, for example, the temperature sensing unit 16 is disposed in the accommodating space 112 of the accommodating slot 11 and contacts the solution 12 in the accommodating space 112. The temperature sensing unit 16 is used for measuring the temperature of the solution 12 in the containing tank 11 and generating a solution temperature, and then calculating the gas concentration of the solution 12 according to the weight and the temperature of the solution 12.
In practical applications, the weighing device 15 and/or the temperature measuring unit 115 can be electrically connected to a computing device 17, wherein the computing device 17 receives a solution weight from the weighing device 15 and/or a solution temperature from the temperature measuring unit 115, and calculates the gas concentration in the solution 12 according to the solution weight and/or the solution temperature. Specifically, the computing device 17 includes, but is not limited to, a computer or a Programmable Logic Controller (PLC). The programmable logic controller is a digital electronic device having a microprocessor, a memory, an input/output unit, a power module, and a digital/analog unit, and can load the control command into the memory for storage and execution at any time.
In the embodiment of the present invention, the relationship among the gas concentration, the weight and/or the temperature of the solution 12 may be stored in the computing device 17 to form a look-up table, and then the computing device 17 may calculate or look-up the gas concentration in the solution 12 according to the received solution weight and/or the received solution temperature.
In addition, when dissolving a gas in the solution 12, the temperature of the solution 12 is generally lowered to increase the solubility and dissolution efficiency of the gas. When the low-temperature solution 12 is delivered into the receiving tank 11, the temperature of the receiving tank 11 will decrease such that water vapor condenses on the outer surface of the receiving tank 11, which may cause the weighing device 15 to be unable to accurately measure the weight of the solution 12, thereby affecting the accuracy of the gas concentration measurement.
Therefore, the present invention further proposes that the thermal insulation layer 13 is disposed on the outer surface of the receiving groove 11 and completely covers the receiving groove 11. The arrangement of the thermal insulation layer 13 can prevent the temperature of the solution 12 in the containing groove 11 from being affected by the external environment, so that the temperature of the solution 12 in the containing groove 11 is kept constant, and in addition, the external moisture can be prevented from being condensed on the outer surface of the containing groove 11, and the accuracy of measuring the gas concentration in the solution 12 is affected.
In another embodiment of the present invention, as shown in fig. 2, the gas concentration measuring apparatus 100 may include a heat-insulating box 19, and the container 11 and the weighing device 15 are disposed in the heat-insulating box 19, and the heat-insulating box 19 may be a closed box or a cover. The temperature of the solution 12 in the container 11 can be further stabilized by the heat insulation box 19, and the influence of the external environment on the accuracy of the solution weight measured by the weighing device 15, such as the influence of external wind and dust, can be prevented.
In practical applications, the gas concentration measuring device 10/100 may be fluidly connected to a storage tank 18 to form a loop, as shown in fig. 3 and 4, for example, the input end 111 and the output end 113 of the gas concentration measuring device 10/100 are both connected to the storage tank 18, so that the solution 12 in the storage tank 18 is transferred into the accommodating space 112 of the accommodating tank 11 through the input end 111, and then the solution 12 in the accommodating space 112 of the accommodating tank 11 is transferred back to the storage tank 18 through the output end 113, and the gas concentration in the solution 12 in the storage tank 18 can be quickly and accurately obtained through the above connection.
In one embodiment of the present invention, the storage tank 18 may be a gas concentration raising device for the solution, and is used to dissolve gas in the solution 12 to raise the gas concentration in the solution 12. The input end 111 of the gas concentration measuring device 10/100 is fluidly connected to a pumping device 14, and the gas concentration of the solution 12 in the gas concentration raising device or storage tank 18 is delivered to the containing tank 11 through the pumping device 14, so as to dynamically measure the gas concentration of the solution 12. When the gas concentration in the solution 12 reaches a predetermined value, the solution 12 in the gas concentration measuring device 10/100 can be outputted, and the solution 12 with the predetermined gas concentration can be obtained.
The gas concentration measuring device 10/100 of the present invention can measure the gas concentration in the solution 12 quickly, and the solution 12 in the storage tank 18 does not need to be taken out during the measurement process, so the loss of the gas dissolved in the solution 12 can be avoided, and the accuracy of measuring the gas concentration in the solution 12 can be affected. In addition, the gas leaving the solution 12 is prevented from damaging the measuring instrument or adversely affecting the human body.
In an embodiment of the present invention, the input end 111 and the output end 113 of the container 11 can be respectively connected to the storage tank 18 through a hose 16, for example, the hose 16 can be located in the heat insulation box 19, so that the container 11 on the weighing device 15 can slightly swing relative to the storage tank 18, thereby improving the accuracy of the weighing device 15 in measuring the weight of the solution 12.
In addition, the gas concentration measuring device 10/100 of the present invention can be applied to measure the gas dissolved in the solution 12, for example, the solvent can be water, the gas can be ammonia gas, and the solution 12 can be ammonia water, so as to quickly obtain the concentration of the gas dissolved in the solution 12, and therefore the types of the solution 12 and the dissolved gas are not limited by the scope of the present invention.
In an embodiment of the present invention, the computing device 17 can store a plurality of sets of comparison tables, wherein each of the comparison tables corresponds to a relationship among the solution temperature, the solution weight and the gas concentration of the solvent, the solution 12 and/or the gas. In practical applications, the computing device 17 can select one of the corresponding tables according to the types of the solvent, the solution and/or the gas, and then calculate the gas concentration from the table according to the liquid temperature and the liquid weight. For example, the computing device 17 may store a first table and a second table, wherein the first table records the relationship among the solution temperature, the solution weight and the gas concentration of water, ammonia and/or ammonia, and the second table records the relationship among the solution temperature, the solution weight and the gas concentration of water, carbon dioxide and/or carbonated water. When measuring the concentration of ammonia, the computing device 17 will calculate the concentration of ammonia by using the temperature and weight of ammonia as the reference based on the first look-up table.
The invention has the advantages that:
when the gas concentration in the solution is measured, the gas concentration in the solution can be quickly and accurately obtained without taking out the liquid.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, i.e., all equivalent variations and modifications in the shape, structure, characteristics and spirit of the present invention described in the claims should be included in the scope of the present invention.
Claims (9)
1. An apparatus for measuring the concentration of a gas dissolved in a solution, comprising:
a containing groove which comprises a containing space for containing the solution;
the input end is connected with the accommodating groove and conveys the solution to the accommodating space of the accommodating groove through the input end;
the output end is connected with the accommodating groove and outputs the solution to the accommodating space of the accommodating groove through the output end;
a thermal insulation layer covering the containing groove;
a weighing device for bearing the containing groove and measuring the weight of the solution in the containing space of the containing groove to generate a solution weight; and
and the computing device is electrically connected with the weighing device, receives the weight of the solution by the weighing device and calculates the concentration of gas in the solution by the weight of the solution.
2. The apparatus of claim 1, wherein the computing device is a programmable logic controller or a computer.
3. The apparatus of claim 1, further comprising a temperature measuring unit disposed in the receiving space of the receiving tank for measuring a temperature of the solution in the receiving tank to generate a solution temperature.
4. The apparatus of claim 3, wherein the computing device is electrically connected to the temperature measuring unit, and the temperature measuring unit receives the solution temperature and calculates the gas concentration of the solution according to the solution temperature and the solution weight.
5. The apparatus of claim 1, comprising a thermally insulated box housing the weighing device and the container.
6. The apparatus of claim 1, wherein the output end is disposed above the input end and at a top of the container.
7. The apparatus of claim 1, wherein the input end and the output end of the container are connected to a storage tank, the solution in the storage tank is transported to the container space of the container through the input end, and the liquid in the container space of the container is transported back to the storage tank through the output end.
8. The apparatus of claim 7, wherein the input end and the output end of the container are connected to the storage tank through a hose respectively.
9. The apparatus of claim 7, further comprising a pump fluidly connected to the input end of the tank and configured to deliver the solution in the reservoir to the tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010318887.4A CN111521509A (en) | 2020-04-21 | 2020-04-21 | Apparatus for measuring concentration of gas in solution |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010318887.4A CN111521509A (en) | 2020-04-21 | 2020-04-21 | Apparatus for measuring concentration of gas in solution |
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| CN111521509A true CN111521509A (en) | 2020-08-11 |
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| CN202010318887.4A Pending CN111521509A (en) | 2020-04-21 | 2020-04-21 | Apparatus for measuring concentration of gas in solution |
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Citations (9)
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| JPH02184737A (en) * | 1989-01-11 | 1990-07-19 | Shimizu Corp | Specific gravity/concentration measuring and adjusting device for aqueous solution |
| JP2005338028A (en) * | 2004-05-31 | 2005-12-08 | Macoho Co Ltd | Apparatus for measuring slurry concentration |
| CN101349629A (en) * | 2001-08-28 | 2009-01-21 | 三菱丽阳株式会社 | Detection method for gas density applied to dissolving solution, manufacturing apparatus for gas dissolving solution and membrane member |
| CN201222027Y (en) * | 2008-07-16 | 2009-04-15 | 温武才 | On-line automatic detection apparatus for liquid concentration |
| CN201926604U (en) * | 2010-12-07 | 2011-08-10 | 吴南 | Intelligent concentration meter |
| CN102945051A (en) * | 2012-12-03 | 2013-02-27 | 安徽皖维高新材料股份有限公司 | Polyvinyl acetate online concentration control unit |
| CN106153498A (en) * | 2015-04-22 | 2016-11-23 | 中国石油化工股份有限公司 | A kind of new method detecting solute concentration in solution and device thereof |
| CN109187255A (en) * | 2018-08-31 | 2019-01-11 | 奕瑞影像科技（太仓）有限公司 | Measure the portable unit and measurement method of solid matter meltage in solution |
| CN212674690U (en) * | 2020-04-21 | 2021-03-09 | 紫锐集团有限公司 | Apparatus for measuring concentration of gas in solution |
-
2020
- 2020-04-21 CN CN202010318887.4A patent/CN111521509A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02184737A (en) * | 1989-01-11 | 1990-07-19 | Shimizu Corp | Specific gravity/concentration measuring and adjusting device for aqueous solution |
| CN101349629A (en) * | 2001-08-28 | 2009-01-21 | 三菱丽阳株式会社 | Detection method for gas density applied to dissolving solution, manufacturing apparatus for gas dissolving solution and membrane member |
| JP2005338028A (en) * | 2004-05-31 | 2005-12-08 | Macoho Co Ltd | Apparatus for measuring slurry concentration |
| CN201222027Y (en) * | 2008-07-16 | 2009-04-15 | 温武才 | On-line automatic detection apparatus for liquid concentration |
| CN201926604U (en) * | 2010-12-07 | 2011-08-10 | 吴南 | Intelligent concentration meter |
| CN102945051A (en) * | 2012-12-03 | 2013-02-27 | 安徽皖维高新材料股份有限公司 | Polyvinyl acetate online concentration control unit |
| CN106153498A (en) * | 2015-04-22 | 2016-11-23 | 中国石油化工股份有限公司 | A kind of new method detecting solute concentration in solution and device thereof |
| CN109187255A (en) * | 2018-08-31 | 2019-01-11 | 奕瑞影像科技（太仓）有限公司 | Measure the portable unit and measurement method of solid matter meltage in solution |
| CN212674690U (en) * | 2020-04-21 | 2021-03-09 | 紫锐集团有限公司 | Apparatus for measuring concentration of gas in solution |
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Application publication date: 20200811 |