Ammonia water concentration measuring system

Abstract

The utility model discloses an ammonia water concentration measuring system, and aims to solve the problems that the existing ammonia water concentration detection mostly adopts a manual chemical titration method, the operation is complicated, the measuring period is long, and the real-time detection cannot be realized. The system comprises a measuring instrument, an upper industrial personal computer, a proportioning pump, a stainless steel filter, a first stop valve and a second stop valve, the measuring instrument and the proportioning pump are both electrically connected with the upper industrial personal computer, the output end of the proportioning pump is communicated with an inlet of the measuring instrument, the input end of the proportioning pump is communicated with the first stop valve, and the output end of the stainless steel filter is communicated with the second stop valve. And the suction end of the proportioning pump is communicated with the second stop valve through the stainless steel filter. According to the utility model, the measuring instrument, the upper industrial personal computer and the proportioning pump are arranged, and the ammonia concentration in the water sample is detected in an on-line measurement manner, so that the operation is simpler, the measurement period is short, the real-time detection can be realized, and the measurement requirement of the hydrogen water can be better met.

Description

TECHNICAL FIELD

[0001] The utility model belongs to ammonia water measuring technical field, concretely relates to a kind of ammonia water concentration measuring system. BACKGROUND

[0002] With the development of industrial and agricultural production and the improvement of people's living standards, the discharge of ammonia-containing compounds has increased dramatically, which has become the main source of environmental pollution and attracted attention from all walks of life, so the discharge standard for ammonia is becoming more and more stringent. Therefore, it is necessary to detect the concentration of the discharge to strictly control the content of ammonia water.

[0003] The existing ammonia water concentration detection mostly uses the chemical titration method. Workers take a certain amount of prepared ammonia water sample, add a certain concentration of hydrochloric acid to the sample to cause a neutralization reaction, and then calculate the ammonia water concentration value. However, this detection method is not only complex to operate and has a long measurement period, but also cannot detect in real time. UTILITY MODEL CONTENTS

[0004] (1) Technical problem to be solved

[0005] In view of the shortcomings of the prior art, the utility model aims to provide an ammonia water concentration measuring system, which aims to solve the problem that the existing ammonia water concentration detection mostly uses the chemical titration method of workers, which is not only complex to operate and has a long measurement period, but also cannot detect in real time.

[0006] (2) Technical solution

[0007] To solve the above technical problems, the utility model provides an ammonia water concentration measuring system, which comprises a measuring instrument, an upper industrial computer, a proportional pump, a stainless steel filter, a first stop valve and a second stop valve. The measuring instrument and the proportional pump are electrically connected to the upper industrial computer. The output end of the proportional pump is communicated with the inlet of the measuring instrument. The input end of the proportional pump is communicated with the first stop valve. The suction end of the proportional pump is communicated with the second stop valve through the stainless steel filter. The other end of the second stop valve is provided with a third stop valve and a sampling port through a three-way joint.

[0008] Preferably, the measuring instrument is an ammonia analyzer, and the measuring instrument has a drain silicone hose.

[0009] Further, the measuring instrument, the proportional pump, the stainless steel filter, the first stop valve, the second stop valve, the third stop valve and the sampling port are all connected by pipelines made of corrosion-resistant materials.

[0010] Further, the pipeline is made of stainless steel material, and the first stop valve, the second stop valve and the third stop valve are all 316 stainless steel stop valves.

[0011] Furthermore, the dilution ratio of the proportional pump is 100 times.

[0012] Furthermore, the stainless steel filter is an acid and alkali resistant filter.

[0013] Furthermore, a constant temperature chamber is installed at the water inlet of the first shut-off valve. The inner wall of the constant temperature chamber is equipped with an electric heating spiral coil and a temperature sensor, both of which are electrically connected to the upper industrial control computer.

[0014] Beneficial effects

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This invention utilizes a measuring instrument, a host industrial control computer, and a proportional pump to perform online measurements. First, the proportional pump is activated to dilute the sample water 100 times with pure water. The diluted sample water then enters the measuring instrument for detection and transmits the data to the host industrial control computer. The host industrial control computer pre-inputs a comparison curve between the concentrations of ammonia in the water and ammonia solution, and after proportional conversion, the initial ammonia concentration in the sample water can be obtained. This method is not only simpler to operate and has a shorter measurement cycle, but also enables real-time detection, better meeting the measurement needs of hydrogen water. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the connection structure of this utility model.

[0018] Figure 2 This is a structural diagram of the constant temperature chamber used in this utility model.

[0019] The labels in the attached diagram are as follows: 1. Measuring instrument; 2. Host computer; 3. Proportional pump; 4. Stainless steel filter; 5. First shut-off valve; 6. Second shut-off valve; 7. Third shut-off valve; 8. Sampling port; 9. Drainage silicone hose; 10. Constant temperature chamber; 11. Electric heating spiral coil; 12. Temperature sensor. Detailed Implementation

[0020] Example 1

[0021] This specific embodiment is an ammonia concentration measurement system, the structural schematic diagram of which is shown below. Figure 1 As shown, the system includes a measuring instrument 1, a host industrial control computer 2, a proportional pump 3, a stainless steel filter 4, a first shut-off valve 5, and a second shut-off valve 6. The measuring instrument 1 and the proportional pump 3 are both electrically connected to the host industrial control computer 2. The output end of the proportional pump 3 is connected to the inlet of the measuring instrument 1, the input end of the proportional pump 3 is connected to the first shut-off valve 5, and the suction end of the proportional pump 3 is connected to the second shut-off valve 6 through the stainless steel filter 4. The other end of the second shut-off valve 6 is equipped with a third shut-off valve 7 and a sampling port 8 through a three-way valve.

[0022] Figure 1 As shown, in this embodiment, the measuring instrument 1 is an ammonia analyzer, which can be a French Tethys UV500 ammonia analyzer. The measuring instrument 1 has a drainage silicone hose 9. The principle of the French Tethys U500 ammonia analyzer is gas phase purging-ultraviolet spectrophotometry. During measurement, the mixed and diluted sample water will enter the flow cell inside the measuring instrument 1. After adding HOH, it will be aerated. The generated gas will enter the measuring gas chamber, and then its spectrum will be measured using ultraviolet light. Finally, the ammonia concentration value of the water sample will be directly obtained by using fast Fourier transform. After the measurement is completed, the waste liquid will be discharged through the drainage silicone hose 9.

[0023] In this embodiment, the measuring instrument 1, proportional pump 3, stainless steel filter 4, first shut-off valve 5, second shut-off valve 6, third shut-off valve 7 and sampling port 8 are all connected by pipelines made of corrosion-resistant materials. The pipelines are made of stainless steel, and the first shut-off valve 5, second shut-off valve 6 and third shut-off valve 7 are all 316 stainless steel shut-off valves. This can improve the corrosion resistance of the entire system and extend its service life.

[0024] In this embodiment, the dilution ratio of the proportional pump 3 is 100 times, and the stainless steel filter 4 is an acid and alkali resistant filter. By using the proportional pump 3, the dilution of the sample water can be precisely controlled, and the acid and alkali resistant filter has a longer service life.

[0025] Example 2

[0026] The difference from Example 1 is that, as Figure 2 As shown, a thermostatic chamber 10 is installed at the water inlet of the first shut-off valve 5. An electric heating spiral coil 11 and a temperature sensor 12 are installed on the inner wall of the thermostatic chamber 10. Both the electric heating spiral coil 11 and the temperature sensor 12 are electrically connected to the host industrial control computer 2. The temperature inside the thermostatic chamber 10 can be measured by the temperature sensor 12. When the water inlet temperature of the thermostatic chamber 10 is too low, it is maintained between 30-35℃ by the electric heating spiral coil 11, which eliminates the influence of temperature on the measurement results and makes the measurement results more accurate.

[0027] Working principle: by connecting the measured surface water, drinking water, process water or wastewater and other measurement sample water into the sampling port 8 and the third stop valve 7, the clean water is connected with the first stop valve 5, when in use, the measuring instrument 1 controls the proportional pump 3 through the internal relay to delay the time and the sampling time, at this time, the proportional pump 3 will suck the measurement sample water and the clean water when running, because the dilution ratio of the proportional pump 3 is 100 times, the measuring instrument 1 uses the French Texis U500 ammonia analyzer, the principle is gas phase purging and ultraviolet spectrometry, at this time, the mixed and diluted sample water will enter the flow cell inside the measuring instrument 1, after adding H2O2, the gas generated by aeration enters the measuring chamber, then the ultraviolet light is used to measure the spectrum, finally the ammonia concentration value of the water sample is directly obtained by using fast Fourier transform, the concentration value is transmitted to the upper industrial computer 2, the upper industrial computer 2 pre-inputs the comparison curve of ammonia in water and ammonia water concentration, and then the ammonia concentration in the original sample water can be obtained after proportional feedback conversion, so that automatic and continuous measurement can be carried out, the measurement demand of hydrogen water is met, and after the measurement is completed, the waste liquid is discharged through the drainage silica gel hose 9.

[0028] All the technical features in the embodiment can be freely combined according to actual needs.

[0029] The above embodiment is a preferred implementation scheme of the utility model, in addition to this, the utility model can be realized in other ways, and any obvious replacement without departing from the technical scheme concept is within the protection scope of the utility model.

Claims

1. An ammonia water concentration measuring system, the system comprising a measuring instrument (1), an upper industrial computer (2), a proportional pump (3), a stainless steel filter (4), a first stop valve (5) and a second stop valve (6), characterized in that: The measuring instrument (1) and the proportional pump (3) are electrically connected with the upper industrial computer (2), the output end of the proportional pump (3) is communicated with the inlet of the measuring instrument (1), the input end of the proportional pump (3) is communicated with the first stop valve (5), the suction end of the proportional pump (3) is communicated with the second stop valve (6) through the stainless steel filter (4), the other end of the second stop valve (6) is provided with the third stop valve (7) and the sampling port (8) through the three-way.

2. The ammonia concentration measuring system according to claim 1, characterized by The measuring instrument (1) is an ammonia analyzer, and the measuring instrument (1) has a drain silica gel hose (9).

3. The ammonia concentration measuring system according to claim 2, characterized by The measuring instrument (1), the proportional pump (3), the stainless steel filter (4), the first stop valve (5), the second stop valve (6), the third stop valve (7) and the sampling port (8) are all communicated through pipelines made of corrosion-resistant materials.

4. The ammonia concentration measuring system according to claim 3, characterized by The pipelines are made of stainless steel materials, and the first stop valve (5), the second stop valve (6) and the third stop valve (7) are all 316 stainless steel stop valves.

5. The ammonia concentration measuring system according to claim 4, wherein The dilution ratio of the proportional pump (3) is 100 times.

6. The ammonia concentration measuring system according to claim 5, wherein The stainless steel filter (4) is an acid and alkali resistant filter.

7. The ammonia concentration measuring system according to claim 6, wherein The water inlet end of the first stop valve (5) is provided with a constant temperature box (10), the inner wall of the constant temperature box (10) is provided with an electric heating spiral coil (11) and a temperature sensor (12), and the electric heating spiral coil (11) and the temperature sensor (12) are electrically connected with the upper industrial computer (2).

Images