CN212433043U - Online instrument calibration equipment of thermal power plant's water sample - Google Patents
Online instrument calibration equipment of thermal power plant's water sample Download PDFInfo
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- CN212433043U CN212433043U CN202021266262.XU CN202021266262U CN212433043U CN 212433043 U CN212433043 U CN 212433043U CN 202021266262 U CN202021266262 U CN 202021266262U CN 212433043 U CN212433043 U CN 212433043U
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Abstract
The utility model discloses an online instrument calibration equipment of thermal power plant's water sample relates to water sample detection area. This online instrument calibration equipment of water sample of thermal power plant, including the measuring cell, delivery port and water inlet have been seted up respectively to the both sides of measuring cell, delivery port and water inlet are provided with first connecting pipe and second connecting pipe respectively, the other end of first connecting pipe and the other end of second connecting pipe pass through bolt fixedly connected with tubing pump, the inside of measuring cell is provided with the mark liquid, the inside of mark liquid is provided with the electrode bar, just the top of electrode bar is passed the mark liquid and is connected with the PH meter through the second wire. This online instrument calibration equipment of water sample of thermal power plant takes away the static charge that electrode bar and mark liquid friction produced from the surface of electrode bar, can not change electrode surface potential at the surface accumulation of electrode bar, causes the PH value to measure and produces the error to PH value measurement's accuracy has been improved.
Description
Technical Field
The utility model relates to a water sample detects technical field, specifically is an online instrument calibration equipment of thermal power plant's water sample.
Background
When the PH meter of the thermal power plant is checked, DL/T677-2018 'Power plant on-line chemical meter inspection regulation' provides that the whole machine working error of the PH meter is +/-0.05, the conventional buffer solution calibration method uses static standard solution for checking, and during actual measurement, a measuring medium flows.
The water quality measured by the on-line pH meter of the water vapor system belongs to the range of pure water, the pure water is different from common water and is influenced by a plurality of factors during measurement, wherein the liquid electric potential is most obvious in a low-conductivity water sample, so that the potential of the reference electrode is changed, and the potential difference between the pH glass electrode and the reference electrode is changed, thereby causing the error of pH measurement.
When the conductivity of a high-purity water sample is very low, the high-purity water sample is similar to that of an insulator in nature, and when the high-purity water sample flows, the high-purity water sample and the surface of an electrode or an insulating pipeline generate friction similar to that of the insulator to generate static charges, and the static charges cannot be conducted away in time in water with very high resistivity, so that the static charges can be accumulated on the surface of the electrode, the potential on the surface of the electrode is changed, and errors are generated in pH value measurement.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
Not enough to prior art, the utility model discloses an online instrument calibration equipment of thermal power plant's water sample to solve the problem that proposes in the above-mentioned background art.
(II) technical scheme
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides an online instrument calibration equipment of water sample of thermal power plant, includes the measuring cell, delivery port and water inlet have been seted up respectively to the both sides of measuring cell, delivery port and water inlet are provided with first connecting pipe and second connecting pipe respectively, just the tip of first connecting pipe and the tip of second connecting pipe extend to the inside of measuring cell, the other end of first connecting pipe and the other end of second connecting pipe pass through bolt fixedly connected with tubing pump, the tubing pump is through first wire fixedly connected with power, the inside of measuring cell is provided with the mark liquid, the inside of mark liquid is provided with the electrode bar, just the top of electrode bar is passed the mark liquid and is connected with the PH table through the second wire.
Preferably, the joints of the water outlet and the water inlet with the end of the first connecting pipe and the end of the second connecting pipe are provided with sealing rings.
Preferably, the water outlet is arranged at the bottom of the side wall of the measuring tank, and the water inlet is arranged at the top of the side wall of the measuring tank.
Preferably, an isolation valve is arranged at one end of the first connecting pipe close to the water outlet.
Preferably, the power supply is electrically connected with a power switch.
The utility model discloses an online instrument calibration equipment of thermal power plant's water sample, its beneficial effect who possesses as follows:
1. this online instrument calibration equipment of water sample of thermal power plant, through the first connecting pipe, second connecting pipe and the tubing pump that set up to can make the mark liquid at the measuring cell, circulation flow between first connecting pipe and the second connecting pipe, take away the static charge that electrode bar and mark liquid friction produced from the surface of electrode bar, can not be at the surface accumulation of electrode bar, change electrode surface potential, cause the PH value to measure and produce the error, thereby the accuracy of PH value measurement has been improved.
2. This online instrument calibration equipment of water sample of thermal power plant, through the tubing pump that sets up, exert pressure to the inside mark liquid of first connecting pipe and second connecting pipe, mark liquid has been increased at the measuring cell, the rate of circulation flow between first connecting pipe and the second connecting pipe, the condition that stops flowing can not take place, sealing washer through setting up, greatly increased the leakproofness of measuring cell, avoid taking place the condition that mark liquid leaked, through the isolating valve that sets up, thereby when stopping to examine, close the isolating valve on the first connecting pipe, make the mark liquid in the measuring cell can not outwards flow again.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. a measuring cell; 101. a water outlet; 102. a water inlet; 103. a first connecting pipe; 104. a second connecting pipe; 105. a pipeline pump; 106. an isolation valve; 107. a power switch; 2. marking liquid; 201. an electrode rod; 202. and (4) a PH table.
Detailed Description
The embodiment of the utility model discloses online instrument calibration equipment of water sample of thermal power plant, as shown in fig. 1, including measuring cell 1, delivery port 101 and water inlet 102 have been seted up respectively to the both sides of measuring cell 1, delivery port 101 and water inlet 102 are provided with first connecting pipe 103 and second connecting pipe 104 respectively, and the tip of first connecting pipe 103 and the tip of second connecting pipe 104 extend to the inside of measuring cell 1, bolt fixedly connected with tubing pump 105 is passed through to the other end of first connecting pipe 103 and the other end of second connecting pipe 104, tubing pump 105 is through first wire fixedly connected with power, the inside of measuring cell 1 is provided with mark liquid 2, the inside of mark liquid 2 is provided with electrode bar 201, and the top of electrode bar 201 passes mark liquid 2 and is connected with PH table 202 through the second wire, through the first connecting pipe 103 that sets up, second connecting pipe 104 and tubing pump 105, thereby can make mark liquid 2 at measuring cell 1, The first connecting pipe 103 and the second connecting pipe 104 circularly flow, static charges generated by friction of the electrode rod 201 and the standard solution 2 are taken away from the outer surface of the electrode rod 201, accumulation on the outer surface of the electrode rod 201 is avoided, the surface potential of the electrode is changed, and errors are caused in pH value measurement, so that the accuracy of the pH value measurement is improved, pressure is applied to the standard solution 2 in the first connecting pipe 103 and the second connecting pipe 104 through the arranged pipeline pump 105, the speed of the circulating flow of the standard solution 2 among the measuring pool 1, the first connecting pipe 103 and the second connecting pipe 104 is increased, and the condition of stopping the flow is avoided.
The joints of the water outlet 101 and the water inlet 102 with the end of the first connecting pipe 103 and the end of the second connecting pipe 104 are provided with sealing rings, so that the tightness of the measuring tank 1 is greatly improved, and the leakage of the standard liquid 2 is avoided.
The water outlet 101 is disposed at the bottom of the side wall of the measuring tank 1, and the water inlet 102 is disposed at the top of the side wall of the measuring tank 1, so that the first connecting pipe 103 is convenient for extracting the label liquid 2 outwards, and meanwhile, the label liquid 2 in the measuring tank 1 is prevented from entering the second connecting pipe 104 from the water inlet 102.
An isolation valve 106 is arranged at one end of the first connecting pipe 103 close to the water outlet 101, and the isolation valve 106 is arranged, so that when the detection is stopped, the isolation valve 106 on the first connecting pipe 103 is closed, and the standard liquid 2 in the measuring cell 1 can not flow out any more.
The power supply is electrically connected to a power switch 107, and the pipeline pump 105 is conveniently controlled to be turned on and off by the power switch 107.
The working principle is as follows: firstly, opening an isolation valve 106 to enable the standard liquid 2 in the measuring pool 1 to enter the first connecting pipe 103 from the water outlet 101, simultaneously opening a pipeline pump 105 to apply pressure to the standard liquid 2 in the first connecting pipe 103 and the second connecting pipe 104 to enable the standard liquid 2 to enter the measuring pool 1 from the water inlet 102, and therefore the standard liquid 2 can flow circularly among the measuring pool 1, the first connecting pipe 103 and the second connecting pipe 104;
the standard solution 2 rubs with the outer surface of the electrode rod 201 when flowing to generate static charge, and the static charge is taken away from the outer surface of the electrode rod 201 because the standard solution 2 circularly flows among the measuring cell 1, the first connecting pipe 103 and the second connecting pipe 104, so that the potential on the surface of the electrode is not accumulated on the outer surface of the electrode rod 201, the potential on the surface of the electrode is not changed, and the error in the measurement of the pH value is caused, thereby improving the accuracy of the measurement of the pH value.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. The utility model provides an online instrument calibration equipment of thermal power plant's water sample, includes measuring cell (1), its characterized in that: delivery port (101) and water inlet (102) have been seted up respectively to the both sides of measuring cell (1), delivery port (101) and water inlet (102) are provided with first connecting pipe (103) and second connecting pipe (104) respectively, just the tip of first connecting pipe (103) and the tip of second connecting pipe (104) extend to the inside of measuring cell (1), bolt fixedly connected with tubing pump (105) are passed through to the other end of first connecting pipe (103) and the other end of second connecting pipe (104), tubing pump (105) are through first wire fixedly connected with power, the inside of measuring cell (1) is provided with mark liquid (2), the inside of mark liquid (2) is provided with electrode bar (201), just mark liquid (2) are passed to the top of electrode bar (201) and are connected with PH table (202) through the second wire.
2. The on-line instrument calibration device for the water sample of the thermal power plant as claimed in claim 1, characterized in that: and sealing rings are arranged at the joints of the water outlet (101) and the water inlet (102) with the end part of the first connecting pipe (103) and the end part of the second connecting pipe (104).
3. The on-line instrument calibration device for the water sample of the thermal power plant as claimed in claim 1, characterized in that: the water outlet (101) is arranged at the bottom of the side wall of the measuring tank (1), and the water inlet (102) is arranged at the top of the side wall of the measuring tank (1).
4. The on-line instrument calibration device for the water sample of the thermal power plant as claimed in claim 1, characterized in that: an isolation valve (106) is arranged at one end of the first connecting pipe (103) close to the water outlet (101).
5. The on-line instrument calibration device for the water sample of the thermal power plant as claimed in claim 1, characterized in that: the power supply is electrically connected with a power switch (107).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021266262.XU CN212433043U (en) | 2020-07-02 | 2020-07-02 | Online instrument calibration equipment of thermal power plant's water sample |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021266262.XU CN212433043U (en) | 2020-07-02 | 2020-07-02 | Online instrument calibration equipment of thermal power plant's water sample |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212433043U true CN212433043U (en) | 2021-01-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021266262.XU Active CN212433043U (en) | 2020-07-02 | 2020-07-02 | Online instrument calibration equipment of thermal power plant's water sample |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212433043U (en) |
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2020
- 2020-07-02 CN CN202021266262.XU patent/CN212433043U/en active Active
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Effective date of registration: 20211025 Address after: 253000 no.1868, Dongfeng West Road, Dezhou City, Shandong Province Patentee after: HUANENG INTERNATIONAL POWER Co.,Ltd. DEZHOU POWER PLANT Address before: 253024 No.10, Huaxing Road, Decheng District, Dezhou City, Shandong Province Patentee before: Qi Jijie |