CN111174099A - Multi-range water quality analyzer flow path system and accurate quantification method - Google Patents
Multi-range water quality analyzer flow path system and accurate quantification method Download PDFInfo
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- CN111174099A CN111174099A CN201911315747.5A CN201911315747A CN111174099A CN 111174099 A CN111174099 A CN 111174099A CN 201911315747 A CN201911315747 A CN 201911315747A CN 111174099 A CN111174099 A CN 111174099A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 238000011002 quantification Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims description 13
- 239000012530 fluid Substances 0.000 claims abstract description 35
- 239000000126 substance Substances 0.000 claims abstract description 35
- 230000002572 peristaltic effect Effects 0.000 claims abstract description 29
- 238000004891 communication Methods 0.000 claims description 2
- 238000004458 analytical method Methods 0.000 abstract description 7
- 238000004445 quantitative analysis Methods 0.000 abstract 1
- 238000001514 detection method Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 7
- 239000003153 chemical reaction reagent Substances 0.000 description 6
- 239000003570 air Substances 0.000 description 2
- 239000008213 purified water Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000012864 cross contamination Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/18—Arrangements for supervising or controlling working operations for measuring the quantity of conveyed product
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F19/00—Calibrated capacity measures for fluids or fluent solid material, e.g. measuring cups
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/18—Water
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Abstract
The invention discloses a multi-range water quality analyzer flow path system, comprising: the multi-way valve comprises ports A-J and ports CTR, the ports A-I are respectively connected with the container bottles a-I one by one, and the port J is connected with an inlet of the reactor; the right end of the first quantitative pipeline is connected with the port CTR, and fluid substances in the container bottles a-I can be respectively conveyed to the first quantitative pipeline through the ports A-I through the port CTR to be quantified for a first unit volume; the first end of the first three-way element is connected with the peristaltic pump, the second end of the first three-way element is connected with the left end of the first quantitative pipeline, and the third end of the first three-way element forms a discharge end; the fluid substance metered by the first metering line is fed into the reactor through the port CTR and the port J. The invention relates to a water quality analysis and flow exposure system with accurate quantification and improved efficiency. In addition, the invention also discloses a quantitative method.
Description
Technical Field
The invention relates to the technical field of water quality detection equipment, in particular to a water quality analysis and flow dew system with accurate quantification and improved efficiency and an accurate quantification method.
Background
As shown in fig. 1, a flow path system of a multi-range water quality analyzer in the prior art includes: the system comprises a multi-way valve 1, a detector 2, an in-place sensor 3, a pipeline 4, a peristaltic pump 5 and container bottles a-j, wherein the container bottles a-j are respectively used for containing a standard sample I, a standard sample II, a reagent I, a reagent II, a reagent III, purified water, air, waste water, waste liquid and a sample to be detected. The port CTR of the multi-way valve 1 is connected with the sample injector 2, and the ports A-J are respectively connected with a standard sample I, a standard sample II, a reagent I, a reagent II, a reagent III, purified water, air, waste water, waste liquid and a sample to be detected.
The water quality analysis process is that the liquid in the container bottles a-j is quantitatively added into the detector 2 for detection according to the current detection standard. How to do quantitative addition is the key to accurately analyze the water quality.
In the conventional technique shown in FIG. 1, the length of the pipe 4 is set to a first unit volume, and when it is necessary to add a solution connected to the container bottles a to j, the solution is quantitatively added in the unit volume. How to do the quantitative addition is described by adding a standard sample I as follows:
1. the port 1 and the port CTR of the multi-way valve 1 are communicated, the peristaltic pump works, and the standard sample I passes through the pipeline 4 at the speed V1Sample introduction;
2. the in-place sensor 3 detects that the detection standard sample I reaches a detection point, the peristaltic pump stops, but the standard sample I still has a velocity V due to inertia2Overshooting a small distance (V)2＜V1)；
3. Starting the peristaltic pump to reverse, the standard sample I in the pipeline 4 is made to flow at a speed V3Returning to the detection point, the peristaltic pump is stopped (V)3＜V2) At this time, the quantification of the standard sample I is completed;
4. the port 7 of the multi-way valve 1 is communicated with air, and the standard sample I in the quantitative pipeline 4 is pumped to the detector 2 through the peristaltic pump, so that the quantitative addition of the standard sample I is completed.
The disadvantages of the above solution are:
1. the accuracy of the quantification is seriously impaired if there are air bubbles in the line 4;
2. the in-place sensor 3 is influenced by the precision and the surface tension of the liquid, and cannot detect the liquid level completely and accurately;
3. in addition, the quantitative steps of the scheme are complicated, time-consuming and low in efficiency, and the improvement of the working efficiency and the reduction of the detection cost are not facilitated.
Therefore, a water quality analysis and drainage system and a method for accurate quantification are needed.
Disclosure of Invention
The invention aims to provide a water quality analysis and liquid leakage system with accurate quantification and improved efficiency and an accurate quantification method.
In order to achieve the purpose, the technical scheme provided by the invention is as follows: provided is a flow path system of a multi-range water quality analyzer, comprising:
the multi-way valve comprises ports A-J and ports CTR, the ports A-I are connected with the container bottles a-I one by one, and the port J is connected with an inlet of the reactor;
the right end of the first quantitative pipeline is connected with the port CTR, and fluid substances in the container bottles a-I can be respectively conveyed to the first quantitative pipeline through the ports A-I through the port CTR to be quantified for a first unit volume;
a first end of the first three-way element is connected with the peristaltic pump, a second end of the first three-way element is connected with the left end of the first quantitative pipeline, and a third end of the first three-way element forms a discharge end;
the fluid substance metered by the first metering line is fed into the reactor through the port CTR and the port J.
The peristaltic pump is characterized by further comprising a second three-way element, wherein the first end of the second three-way element is connected with the peristaltic pump, the second end of the second three-way element is connected with the first end of the first three-way element, and the third end of the second three-way element forms a discharge end.
The second quantitative pipeline is arranged between the second three-way element and the first three-way element.
The left end of the second quantitative pipeline is connected with the second end of the second three-way element, and the right end of the second quantitative pipeline is connected with the first end of the first three-way element.
The first end and the second end of the first three-way element are on the same straight line, the third end of the first three-way element is vertically connected to a connecting line between the first end and the second end of the first three-way element, the first end, the second end and the third end of the first three-way element are communicated to form a joint, and the third end of the first three-way element is provided with an electromagnetic valve.
The structure of the second three-way element is the same as that of the first three-way element.
In order to realize the scheme, the invention also provides a method for accurately quantifying by using the multi-range water quality analyzer flow path system, which comprises the following steps:
step (1), connecting ports A-I of the multi-way valve with container bottles a-I one by one respectively, and closing an inlet and an outlet of the reactor;
quantifying a fluid substance in one container bottle X of the container bottles a-I, communicating a port X of the multi-way valve with the container bottle X, and communicating the port X with the first quantitative pipeline through a port CTR, wherein the container bottle X is one of the container bottles a-I, and the port X is one of the ports A-I;
step (3), opening the first end and the second end of the first three-way element, starting the peristaltic pump, and enabling the fluid substance in the container bottle x to fill the first quantitative pipeline and overshoot to a distance from the left side of the first end of the first three-way element;
step (4), closing the second end of the first three-way element, opening the first end and the third end of the first three-way element, and starting the peristaltic pump to enable fluid substances in the container bottle x on a pipeline between the peristaltic pump and the third end of the first three-way element to flow out through the first end and the third end of the first three-way element, so that the first unit volume is quantified;
and (5) closing the third end of the first three-way element, opening the first end and the second end of the first three-way element, and opening an inlet of the reactor to allow the fluid substance with the determined first quantitative pipeline to enter the reactor.
The peristaltic pump is characterized by further comprising a second three-way element, the second three-way element is arranged between the peristaltic pump and the first three-way element, the first end of the second three-way element is connected with the peristaltic pump, the second end of the second three-way element is connected with the first end of the first three-way element, and the third end of the second three-way element forms a discharge end.
The second quantitative pipeline is arranged between the second three-way element and the first three-way element.
And the third end of the first three-way element and the third end of the second three-way element are respectively provided with an electromagnetic valve.
Compared with the prior art, the flow path system of the multi-range water quality analyzer comprises the first quantitative pipeline, the right end of the first quantitative pipeline is connected with the port CTR, and fluid substances in the container bottles a-I can be conveyed to the first quantitative pipeline through the ports A-I through the port CTR for quantification; it is possible to accurately quantify the fluid substance to be quantified.
The invention will become more apparent from the following description when taken in conjunction with the accompanying drawings, which illustrate embodiments of the invention.
Drawings
Fig. 1 is a schematic view of a prior art water quality analyzer distillate system.
Fig. 2 is a schematic diagram showing an embodiment of the multi-range water quality analyzer liquid dew system of the present invention.
FIG. 3 is a flow chart showing a method for performing accurate quantification using a multi-range water quality analyzer flow path system according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.
Referring to fig. 2, a multi-range water quality analyzer flow path system 100 according to an embodiment of the present invention includes:
the multi-way valve 1 comprises ports A-J and ports CTR, the ports A-I are connected with the container bottles a-I one by one, and the port J is connected with an inlet of the reactor 10;
the right end of the first quantitative pipeline 2 is connected with the port CTR, and fluid substances in the container bottles a-I can be respectively conveyed to the first quantitative pipeline 2 through the ports A-I through the port CTR to be quantified for a first unit volume;
a first three-way element 3, wherein a first end 31 of the first three-way element 3 is connected with the peristaltic pump 4, a second end 32 of the first three-way element 3 is connected with the left end of the first quantitative pipeline 2, and a third end of the second three-way element forms a discharge end;
the fluid substance dosed by the first dosing line 2 is fed into the reactor through the port CTR and the port J.
Thus, the left end of the first metering line 2 is connected to the second end 32 of the first three-way element 3, the right end of the first metering line 2 is connected to the port CTR, and the volume of the first metering line 2 is the first unit volume.
The container bottles a to i include container bottles a, b, c, d, e, f, g, h and i; the ports A to J include a port A, B, C, D, E, F, G, I, J.
In one embodiment, referring to fig. 2, the device further comprises a second three-way element 5, wherein a first end 51 of the second three-way element 5 is connected with the peristaltic pump 4, a second end 52 of the second three-way element 5 is connected with the first end 31 of the first three-way element 3, and a third end 53 of the second three-way element 5 forms a discharge end.
In one embodiment, with reference to fig. 2, a second metering line 6 is also included, said second metering line 6 being arranged between said second three-way element 5 and said first three-way element 3. In this embodiment, the second quantitative pipeline 6 is actually connected to the left side of the first three-way element 3, which can effectively increase the volume of the quantitative pipeline and increase the quantitative efficiency to increase the efficiency of water quality analysis.
In one embodiment, with reference to fig. 2, the left end of the second metering line 6 is connected to the second end 52 of the second three-way element 5, and the right end of the second metering line 6 is connected to the first end 31 of the first three-way element 3. The second metering line 6 is connected in an extended manner to the left end of the first metering line 2, in particular between the first end 31 of the first three-way element 3 and the second end 52 of the second three-way element 5. The connection between the second dosing line 6 and the first dosing line 2 is via the first three-way element 3, the second dosing line 6 being an extension of the first dosing line 2. Therefore, the invention provides a flow path system of a water quality analyzer, which can change the length of a quantitative pipeline and can meet the requirement of large-scale quantification.
In one embodiment, referring to fig. 2, the first end 31 and the second end 32 of the first three-way element 3 are on the same straight line, the third end 33 of the first three-way element 3 is vertically connected to the connection line between the first end 31 and the second end 32 of the first three-way element 3, the connection point is formed at the communication position of the first end 31, the second end 32 and the third end 33 of the first three-way element 3, and the third end 33 of the first three-way element 3 is provided with a solenoid valve 34. The third end of the first three-way element 3 can be opened or closed by means of the solenoid valve 34.
The structure of the second three-way element 5 is the same as the structure of the first three-way element 3.
The first three-way element 3 and the second three-way element 5 can both achieve no dead volume, and the inside of the whole element can be thoroughly cleaned by clear water, so that the pipeline cleaning work before quantification is carried out on different fluid substances can be met, and cross contamination is prevented. The dead volume refers to a volume that is difficult to clean.
In the above embodiment, structurally, the main body of the first three-way element 3 is a long pipe, the first end 31 of the first three-way element 3 and the second end 32 of the first three-way element 3 are two ends of the long pipe, respectively, and the third end 33 of the first three-way element 3 is a short pipe and is connected to the middle of the long pipe. Therefore, there is no dead volume between the three ports of the first three-way element 3, and it can be cleaned thoroughly, and the structure of the second three-way element 5 is the same as that of the first three-way element 3: structurally, the main body of the second three-way element 5 is also a long pipe, the first end 51 of the second three-way element 5 and the second end 52 of the second three-way element 5 are two ends of the long pipe respectively, and the third end 53 of the second three-way element 5 is a short pipe and is connected to the middle of the long pipe. Therefore, there is no dead volume between the three ports of the second three-way element 5, and it can be thoroughly cleaned.
In an embodiment shown in fig. 3, the present invention further provides a method for performing accurate quantification by using a multi-range water quality analyzer flow path system, including:
s001, connecting the ports A-I of the multi-way valve 1 with container bottles a-I one by one respectively, and closing the inlet and the outlet of the reactor 10; the embodiment of the invention adopts the rotary valve as the switching part of the fluid substances, has small dead volume, and is easy to clean thoroughly when different fluid substances are switched.
S002, quantifying a fluid substance in one of the container bottles a-I, wherein a port X of the multi-way valve 1 is communicated with the container bottle X and is communicated with the first quantitative pipeline 2 through a port CTR, the container bottle X is one of the container bottles a-I, and the port X is one of the ports A-I;
s003, opening the first end 31 and the second end 32 of the first three-way element 3, and starting the peristaltic pump 4 to allow the fluid substance in the container bottle x to fill the first quantitative pipeline 2 and overshoot a distance to the left of the first end 31 of the first three-way element 3; since the volume of the first quantitative pipeline 2 is known, the fluid substance to be reacted in the reactor 10 is first quantified through the quantitative pipeline 2, and then quantified with the quantitative pipeline 2 as the first unit volume, and the quantitative pipeline 2 can also quantify the fluid substance with extremely high accuracy, so that the amount of the fluid substance entering the reactor 10 can be accurately added according to the experimental requirements. As can be seen from a plurality of experiments, when the fluid substance in the container bottle x enters the first quantitative pipe 2 through the port CTR, the fluid substance at the left end of the first quantitative pipe 2 is prone to generate bubbles and causes inaccurate quantitative determination, so that the fluid substance in the container bottle x fills the first quantitative pipe 2 and overshoots to a distance to the left of the first end 31 of the first three-way element 3, and a small section of the possible bubbles of the fluid substance appears to the left of the first end 31 of the first three-way element 3 and does not appear in the first quantitative pipe 2.
S004, closing the second end 32 of the first three-way element 3 and opening the first end 31 and the third end 33 of the first three-way element 3, and starting the peristaltic pump 4, so that the fluid substance in the container bottle x on the pipeline between the peristaltic pump 4 and the third end 33 of the first three-way element 3 flows out through the first end 31 and the third end 33 of the first three-way element 3, thereby completing the first unit volume dosing; since the volume of the first quantitative pipeline 2 is known, the fluid substance to be reacted in the reactor 10 is first quantified through the first quantitative pipeline 2, and then quantified with the first quantitative pipeline 2 as the first unit volume, and the first quantitative pipeline 2 can also quantify the fluid substance with extremely high accuracy, so that the amount of the fluid substance entering the reactor 10 can be accurately added according to the experimental requirements.
S005, closing the third end 33 of the first three-way element 31, opening the first end 31 and the second end 32 of the first three-way element 31, and opening the inlet of the reactor 10, so as to allow the fluid substance in the first quantitative pipeline 2 to enter the reactor 10.
In one embodiment, referring to fig. 2, the device further comprises a second three-way element 5, wherein a first end 51 of the second three-way element 5 is connected with the peristaltic pump 4, a second end 52 of the second three-way element 5 is connected with the first end 31 of the first three-way element 3, and a third end 53 of the second three-way element 5 forms a discharge end.
In one embodiment, with reference to fig. 2, a second metering line 6 is also included, said second metering line 6 being arranged between said second three-way element 5 and said first three-way element 3. In this embodiment, the second quantitative pipeline 6 is actually connected to the left side of the first three-way element 3, which can effectively increase the volume of the quantitative pipeline and increase the quantitative efficiency to increase the efficiency of water quality analysis. Therefore, the invention provides a flow path system of a water quality analyzer, which can change the length of a quantitative pipeline.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A multi-range water quality analyzer flow path system, comprising:
the multi-way valve comprises ports A-J and ports CTR, the ports A-I are connected with the container bottles a-I one by one, and the port J is connected with an inlet of the reactor;
the right end of the first quantitative pipeline is connected with the port CTR, and fluid substances in the container bottles a-I can be respectively conveyed to the first quantitative pipeline through the ports A-I through the port CTR to be quantified for a first unit volume;
a first end of the first three-way element is connected with the peristaltic pump, a second end of the first three-way element is connected with the left end of the first quantitative pipeline, and a third end of the first three-way element forms a discharge end;
the fluid substance metered by the first metering line is fed into the reactor through the port CTR and the port J.
2. The multi-range water quality analyzer flow path system of claim 1, further comprising a second three-way element, wherein a first end of the second three-way element is connected to a peristaltic pump, a second end of the second three-way element is connected to a first end of the first three-way element, and a third end of the second three-way element forms a discharge end.
3. The multi-range water quality analyzer flow path system of claim 2, further comprising a second dosing line disposed between the first tee element and the second tee element.
4. The multi-range water quality analyzer flow path system of claim 3, wherein the left end of the second quantitative pipe is connected to the second end of the second three-way element, and the right end of the second quantitative pipe is connected to the first end of the first three-way element.
5. The multi-range water quality analyzer flow path system of claim 1, wherein the first end and the second end of the first three-way element are on the same straight line, the third end of the first three-way element is vertically connected to the connection line between the first end and the second end of the first three-way element, the connection part is formed at the communication part of the first end, the second end and the third end of the first three-way element, and the third end of the first three-way element is provided with an electromagnetic valve.
6. The multi-range water quality analyzer flow path system of claim 5, wherein the second dosing line is disposed between the second tee element and the first tee element.
7. A method for performing accurate quantification using the multi-range water quality analyzer flow path system according to claim 1, comprising:
step (1), connecting ports A-I of the multi-way valve with container bottles a-I one by one respectively, and closing an inlet and an outlet of the reactor;
quantifying a fluid substance in one container bottle X of the container bottles a-I, communicating a port X of the multi-way valve with the container bottle X, and communicating the port X with the first quantitative pipeline through a port CTR, wherein the container bottle X is one of the container bottles a-I, and the port X is one of the ports A-I;
step (3), opening the first end and the second end of the first three-way element, starting the peristaltic pump, and enabling the fluid substance in the container bottle x to fill the first quantitative pipeline and overshoot to a distance from the left side of the first end of the first three-way element;
step (4), closing the second end of the first three-way element, opening the first end and the third end of the first three-way element, and starting the peristaltic pump to enable fluid substances in the container bottle x on a pipeline between the peristaltic pump and the third end of the first three-way element to flow out through the first end and the third end of the first three-way element, so that the first unit volume is quantified;
and (5) closing the third end of the first three-way element, opening the first end and the second end of the first three-way element, and opening an inlet of the reactor to allow the fluid substance with the determined first quantitative pipeline to enter the reactor.
8. The method of claim 7, further comprising a second tee element disposed between the peristaltic pump and the first tee element, a first end of the second tee element being connected to the peristaltic pump, a second end of the second tee element being connected to the first end of the first tee element, a third end of the second tee element forming a discharge end.
9. The method of claim 8, wherein the second metering line is disposed between the second tee element and the first tee element.
10. The method of claim 8, wherein a solenoid valve is provided at each of the third end of the first three-way element and the third end of the second three-way element.
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