CN212658669U - Device for measuring content of dissolved hydrogen in high-temperature and high-pressure steam - Google Patents
Device for measuring content of dissolved hydrogen in high-temperature and high-pressure steam Download PDFInfo
- Publication number
- CN212658669U CN212658669U CN202021562508.8U CN202021562508U CN212658669U CN 212658669 U CN212658669 U CN 212658669U CN 202021562508 U CN202021562508 U CN 202021562508U CN 212658669 U CN212658669 U CN 212658669U
- Authority
- CN
- China
- Prior art keywords
- dissolved oxygen
- oxygen meter
- dissolved
- flow cell
- resin column
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The utility model relates to a dissolved hydrogen content measuring device in high temperature high pressure steam, it belongs to the monitoring field. The utility model discloses a sample and flow control unit, sodium type resin column, the stainless steel tee bend, the syringe pump, the demineralized water tank, dissolved oxygen meter flow cell, palladium catalysis resin column, dissolved oxygen meter and programmable controller, sample and flow control unit include the sample pipeline, needle valve and flowmeter, sodium type resin column links to each other with sample and flow control unit, dissolved oxygen meter flow cell is including dissolved oxygen meter flow cell one and dissolved oxygen meter flow cell two, stainless steel tee bend one end links to each other with sodium type resin column, both ends link to each other with dissolved oxygen meter flow cell one and the syringe pump outlet respectively in addition, the syringe pump other end links to each other with the demineralized water tank, dissolved oxygen meter links to each other with dissolved oxygen meter flow cell, the syringe pump links to each other with programmable controller. The utility model discloses dissolved oxygen and dissolved hydrogen content in the simultaneous measurement water sample, dissolved oxygen meter measurement accuracy just guarantees the accuracy of dissolved hydrogen measuring result, and measuring result does not receive the influence of dissolved oxygen.
Description
Technical Field
The utility model relates to a device especially relates to a dissolved hydrogen content measuring device in high temperature high pressure steam, and it belongs to power plant over temperature monitoring technology field of over temperature of over heater and re-heater pipe wall.
Background
For the metal material of the heating surface which runs for a long time under the actual working condition, the high-temperature oxidation condition of the heating surface is accurately monitored in real time, and the control of the oxidation speed measured by steam in a safe state is a key technology for preventing the superheater and the reheater from tube explosion. But the steam high-temperature oxidation of the superheater and the reheater is difficult to monitor on line, and the oxidation process can be represented only by indirect measurement. The change of the content of the dissolved hydrogen in the steam can be used for measuring the reaction speed between the high-temperature water steam and the inner walls of the superheater and the reheater. When local overheating occurs on the inner walls of the superheater and the reheater or an oxide layer begins to scale due to overheating, the content of dissolved hydrogen in steam will rise remarkably. The dissolved hydrogen content can reflect the actual conditions of the steam high-temperature oxidation of the superheater and the reheater, and is sensitive to the wall temperature index and the steam temperature index. However, in the actual use process, the measurement accuracy of the dissolved hydrogen meter is poor, and the measurement is particularly prominent when the boiler feed water is treated by oxygenation, so that the indicating effect of the dissolved hydrogen on the exceeding of the wall temperature is greatly weakened.
At present, dissolved hydrogen in main steam and reheated steam of a power plant is mainly measured by an online dissolved hydrogen meter, the meter has a similar working principle with a dissolved oxygen meter, and the meter is a testing technology based on a potential-current method. Under the condition of certain voltage, the current is in a linear relation with the dissolved hydrogen in the water sample. However, compared with the dissolved oxygen meter, the dissolved hydrogen meter adopting the potential current method has no definite inspection and calibration, and the measurement accuracy of the meter cannot be ensured.
At present, partial manufacturers check and calibrate the dissolved oxygen meter by adopting a standard gas method, but find that the measured value of the calibrated dissolved hydrogen meter has larger drift and poorer repeatability, and can not meet the requirement of measuring low-content dissolved hydrogen. On the other hand, some manufacturers adopt an electrolysis method for inspection and calibration, but the consistency of the electrolysis efficiency cannot be guaranteed, and the accuracy of a standard water sample cannot be guaranteed, so that the operation is also greatly controversial and cannot meet the actual requirements.
At present, partial high-parameter and high-capacity generator sets are provided with main steam or reheated steam dissolved hydrogen meters, so that the on-line monitoring of dissolved hydrogen is realized, but the meters cannot be checked and calibrated, the validity of measurement data cannot be guaranteed, and the meters lose due effects. On the other hand, in the actual operation process, the measured value of the dissolved hydrogen meter is obviously influenced by the dissolved oxygen in the water sample, and the measured value of the dissolved hydrogen meter is particularly obvious in part of the oxygenating units, so that the measured value of the dissolved hydrogen meter is greatly changed, and the function of indicating that the wall temperature exceeds the standard cannot be achieved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the above-mentioned not enough that exists among the prior art, and provide one kind and can carry out the device of dissolved hydrogen content measurement in the high temperature high pressure steam, the device structural design is reasonable, dissolved oxygen and dissolved hydrogen content in can the simultaneous measurement water sample, and dissolved oxygen meter measurement accuracy just can guarantee the accuracy of dissolved hydrogen measuring result, and the measuring result does not receive the influence of dissolved oxygen moreover.
The utility model provides a technical scheme that above-mentioned problem adopted is: this dissolved hydrogen content measuring device in high temperature high pressure steam, including sample and the flow control unit that is used for controlling the water sample flow that awaits measuring, sample and flow control unit are including consecutive sampling tube way, needle valve and flowmeter, its characterized in that: the device comprises a sodium type resin column, a stainless steel tee joint, an injection pump, a desalting water tank, a dissolved oxygen meter flow cell, a palladium catalytic resin column, a dissolved oxygen meter and a programmable controller, wherein the sodium type resin column is connected with a sampling and flow control unit, the dissolved oxygen meter flow cell comprises a dissolved oxygen meter flow cell I and a dissolved oxygen meter flow cell II, one end of the stainless steel tee joint is connected with the sodium type resin column, the other two ends of the stainless steel tee joint are respectively connected with the dissolved oxygen meter flow cell I and an injection pump outlet, the other end of the injection pump is connected with the desalting water tank, the dissolved oxygen meter is connected with the dissolved oxygen meter flow cell through an electrode and an electrode wire, the injection pump is connected with the programmable controller through a signal wire, the palladium catalytic resin column is positioned between the two dissolved oxygen meter flow cells, the water discharged from the dissolved oxygen meter flow cell II enters a drainage tank of a unit, the two dissolved oxygen electrodes share one transmitter, the transmitter and the injection pump are connected with the programmable controller .
As preferred, sodium type resin column is sodium type cation exchange column, and this sodium type resin column is installed between flowmeter and stainless steel tee bend, and the exchange column material is organic glass, and sodium ion exchange resin is macroporous type color-changing resin, and exchange column length is not less than 0.6m, and the interior water appearance velocity of flow of exchange column is not more than 18m/h, and air relief valve is installed at the exchange column top.
Preferably, the palladium catalysis resin column is installed in the middle of two dissolved oxygen flow-through ponds, and the exchange column material is organic glass, and exchange column length is not less than 0.6m, and the water appearance velocity of flow is not more than 18m/h in the exchange column.
Preferably, the dissolved oxygen meter of the utility model is used for measuring low-content dissolved oxygen in ultrapure water, and the whole machine working error is not more than 3.0 mug/L.
As preferably, stainless steel tee bend and demineralized water tank are stainless steel material, and the demineralized water tank volume is 100L, and the syringe pump contains two independent infusion passageways, and the syringe specification is not less than 50mL, and two infusion passageways pass through programmable controller control automatic switch-over and fill liquid.
Preferably, the sampling pipeline and the needle valve are made of stainless steel.
Preferably, the flowmeter is made of organic glass, and the measuring range of the flowmeter is 0L/h-30L/h.
Compared with the prior art, the utility model, have following advantage and effect: (1) the method can simultaneously measure the content of the dissolved oxygen and the content of the dissolved hydrogen in the water sample, the dissolved oxygen meter can accurately measure the dissolved hydrogen, the accuracy of a dissolved hydrogen measurement result can be ensured, and the measurement result is not influenced by the dissolved oxygen; (2) a dissolved oxygen meter is used as a monitoring instrument, and the content of dissolved hydrogen is analyzed through the content change of dissolved oxygen before and after a palladium catalytic resin column, belonging to an indirect measurement method. Compared with the method of directly adopting a dissolved hydrogen meter, the method has the advantages that the dissolved oxygen meter measuring technology is more mature, the measuring accuracy is higher, and the dissolved oxygen meter based on an optical method basically does not need to be maintained; (3) dissolved oxygen is used as a direct monitoring object, and the dissolved oxygen have a fixed relation of 8:1 in a catalytic reaction, so when the dissolved hydrogen content is analyzed by using a dissolved oxygen content change value, the error of the dissolved hydrogen is smaller, and only 1/8 of the measured value of a dissolved oxygen meter is obtained; (4) compared with a dissolved hydrogen meter, the dissolved oxygen meter has a mature metering calibration mode and standard at present, has traceability, and is more reliable in a dissolved hydrogen measurement result; (5) the measurement accuracy of dissolved hydrogen meter receives dissolved oxygen content influence in the water sample, nevertheless this application dissolved hydrogen content measuring device does not receive the dissolved oxygen content size influence in the steam in the high temperature high pressure steam.
Drawings
Fig. 1 is a schematic view of a device for measuring the content of dissolved hydrogen in high-temperature high-pressure steam according to an embodiment of the present invention.
In the figure: the system comprises a needle valve 1, a flowmeter 2, a sodium type resin column 3, a stainless steel tee joint 4, an injection pump 5, a demineralized water tank 6, a dissolved oxygen meter flow cell 7, a palladium catalytic resin column 8, a sampling pipeline 9, a dissolved oxygen meter 10, a programmable controller 11, a high-temperature frame temperature and pressure reducer 12, a unit water drainage tank 13, a dissolved oxygen meter flow cell I71 and a dissolved oxygen meter flow cell II 72.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.
Examples are given.
Referring to fig. 1, the device for measuring the content of dissolved hydrogen in high-temperature and high-pressure steam in the embodiment includes a sampling and flow control unit for controlling the flow of a water sample to be measured, a sodium type resin column 3, a stainless steel tee joint 4, an injection pump 5, a desalting water tank 6, a dissolved oxygen meter flow cell 7, a palladium catalytic resin column 8, a dissolved oxygen meter 10 and a programmable controller 11, wherein the sampling and flow control unit includes a sampling pipeline 9, a needle valve 1 and a flowmeter 2 which are connected in sequence, the sodium type resin column 3 is connected with the sampling and flow control unit, the dissolved oxygen meter flow cell 7 includes a dissolved oxygen meter flow cell I71 and a dissolved oxygen meter flow cell II 72, one end of the stainless steel tee joint 4 is connected with the sodium type resin column 3, the other end of the stainless steel tee joint 4 is connected with the dissolved oxygen meter flow cell I71, one end of the injection pump 5 is connected with the stainless steel tee joint 4, the dissolved oxygen meter 10, the desalting water tank 6 is communicated with the injection pump 5, one end of the palladium catalytic resin column 8 is connected with a dissolved oxygen meter flow cell I71, the other end of the palladium catalytic resin column 8 is connected with a dissolved oxygen meter flow cell II 72, the water in the dissolved oxygen meter flow cell II 72 flows into the unit water drainage tank 13, and the programmable controller 11 is connected with the injection pump and the 5 dissolved oxygen meter 10 through signal lines.
The leading-out position of the sampling pipeline 9 of the embodiment is positioned at the outlet of the temperature and pressure reducing device 12 of the high-temperature frame; the sampling pipeline 9 and the needle valve 1 are both made of stainless steel; the flowmeter 2 is made of organic glass materials, and the measuring range of the flowmeter is 0L/h-30L/h.
This embodiment sodium type resin column 3 is sodium ion exchange column, and the main effect prevents palladium catalytic resin poisoning for getting rid of the ammonia in the water sample, and this sodium type resin column 3 is installed behind flowmeter 2 before stainless steel tee bend 4, and the exchange column material is organic glass, and sodium ion exchange resin is macroporous type color-changing resin, and exchange column length is not less than 0.6m, and the interior water sample velocity of flow of exchange column is not more than 18m/h, and automatic vent valve is installed at the exchange column top.
The palladium catalytic resin column 8 is responsible for catalyzing the reaction of the dissolved hydrogen and the dissolved oxygen, the palladium catalytic resin column 8 is arranged between two dissolved oxygen flow cells, the exchange column is made of organic glass, the length of the exchange column is not less than 0.6m, and the flow velocity of a water sample in the exchange column is not more than 18 m/h; the exchange column is filled and compacted with palladium catalytic resin, and the water flow direction is downward inlet and upward outlet.
The dissolved oxygen meter 10 of the embodiment is an analysis and detection unit, is suitable for measuring low-content dissolved oxygen in ultrapure water, requires that the working error of the whole machine is not more than 3.0 mug/L, and is based on an optical method in the measurement principle.
The stainless steel tee joint 4, the injection pump 5 and the demineralized water tank 6 are auxiliary units of the measuring device, the installation position is located behind the sodium resin column 3 and in front of a first dissolved oxygen sensor, the stainless steel tee joint 4 and the demineralized water tank 6 are made of stainless steel, the volume of the demineralized water tank 6 is about 100L, the injection pump 5 comprises two independent infusion channels, the specification of the injector is not less than 50mL, and the two infusion channels can be automatically switched and filled with liquid under the control of the programmable controller 11.
Referring to fig. 1, the measuring device is used for measuring the water output from the high-temperature frame temperature and pressure reducer 12, and the water is generally superheated steam or reheated steam subjected to temperature and pressure reduction. The incoming water enters the needle valve 1 through a sampling pipe 9, and the sampling pipe 9 is required to be made of stainless steel materials, but cannot contain hydrogen absorption or hydrogen storage metals. The back of the needle valve 1 is connected with a float flowmeter 2 for measuring the water sample flow, and the water sample flow is controlled by adjusting the opening of the needle valve 1 to be about 20L/h.
The water sample enters the sodium type resin column 3 after the flow regulation, and all ammonia in the water sample is exchanged and removed, so that the subsequent palladium catalysis resin column 8 is prevented from generating ammonia poisoning and losing the catalytic activity. The top of the sodium type resin column 3 is provided with an automatic exhaust valve which can automatically remove the air bubbles in the water sample and eliminate the influence of the air bubbles on the measurement. The resin in the sodium resin column 3 adopts color-changing sodium ion exchange resin, and the state of the resin column can be judged according to the color change of the resin and the resin can be replaced in time.
In order to ensure that the content of dissolved oxygen in the water sample meets the requirement of complete reaction, the content of dissolved oxygen in the water sample needs to be ensured to be at least 10 times of the content of dissolved hydrogen. But in the unit that does not add oxygen or adopt low oxygen treatment, superheated steam or reheat steam's dissolved oxygen content is very low, can't satisfy the requirement, consequently sets up supplementary medicine unit, improves the dissolved oxygen content in the water sample. The auxiliary medicine adding unit consists of a double-channel injection pump 5 and a desalting water tank 6, the volume of the desalting water tank 6 is about 100L, the injection pump 5 continuously adds saturated oxygen desalting water into a water sample, and the dissolved oxygen content of the water sample is kept at least at 50 mug/L. The auxiliary medicine adding unit is connected with the main measuring flow path through a stainless steel tee joint 4, and the channel switching of the double-channel injection pump is jointly controlled by the programmable controller 11 and the injection pump 5.
A water sample passes through a stainless steel tee joint 4 and is added with drugs and then flows through a dissolved oxygen flow cell 7 and a palladium catalytic resin column 8 in sequence, and under the action of the palladium catalytic resin, dissolved oxygen and dissolved hydrogen in the water sample react in a fixed proportion to generate water; the dissolved hydrogen will react completely due to the excess amount of dissolved oxygen in the water sample.
Two dissolved oxygen flow cells 7 are arranged at the inlet and the outlet of the palladium catalytic resin column 8, and the dissolved oxygen content of inlet and outlet water of the palladium catalytic resin column 8 is monitored in real time.
In the embodiment, the dissolved oxygen meter 10 adopts an optical measurement principle, and the dissolved oxygen flow cell 7 is made of stainless steel; the two dissolved oxygen electrodes share one dissolved oxygen meter transmitter, the transmitter is connected with the programmable controller 11, and signals and data are transmitted between the two through 4-20mA current signals.
The programmable controller 11 of the embodiment is connected with the dissolved oxygen meter 10 and the injection pump 5 through signal lines, and controls the switching and starting and stopping of two channels of the injection pump 5 according to a given program; the programmable controller 11 receives the measurement result of the dissolved oxygen meter 10 and calculates according to an internal formula to give the content of dissolved hydrogen in the water sample, and then indicates whether the current superheater and reheater are in an overtemperature state or not according to the change trend of the content of dissolved hydrogen and gives a corresponding warning signal.
The steps for measuring the content of the dissolved hydrogen in the high-temperature high-pressure steam are as follows: sampling from the outlet of the temperature and pressure reducer of the high-temperature sampling frame, and adjusting the flow of a water sample through a needle valve 1 and a flowmeter 2; the water sample enters a sodium type resin column 3 for ion exchange, and ammonia in the water sample is completely removed, so that ammonia poisoning of the subsequent palladium catalytic resin is avoided; at the stainless steel tee joint 4, the injection pump 5 pumps saturated oxygen demineralized water in the demineralized water tank 6 into a water sample to improve the dissolved oxygen content of the water sample; when the oxygenated water sample flows through the palladium catalytic resin column 8, the dissolved oxygen and the dissolved hydrogen in the water sample react under the catalytic action of the palladium resin; dissolved oxygen table 10 in front of and behind palladium catalytic resin column 8 detects the amount of change in dissolved oxygen content before and after the reaction; the programmable controller 11 outputs the content of the dissolved hydrogen in the water sample according to the measured value of the dissolved oxygen meter 10, thereby indicating whether the current superheater and the reheater are in an overtemperature state or not and giving corresponding warning signals.
The whole measuring device can measure the content of dissolved oxygen and dissolved hydrogen in high-temperature high-pressure steam in real time, and can reflect the overtemperature condition of the pipe walls of the superheater and the reheater in time; in the whole measuring device, a sampling pipeline 9, a needle valve 1 and a flowmeter 2 form a sampling and flow control unit to ensure that the flow of a water sample is in a reasonable range; the sodium type resin column 3 is a preposed protection unit of the redox resin column, and is mainly used for removing ammonia in a water sample and preventing the redox resin column from generating ammonia poisoning and losing activity; the core unit of the palladium catalytic resin column 8 measuring device is responsible for catalyzing the reaction of the dissolved hydrogen and the dissolved oxygen; the stainless steel tee joint 4, the demineralized water tank 6 and the injection pump 5 are auxiliary units of the measuring device, demineralized water is added into an online water sample in real time to improve the content of dissolved oxygen, the content of dissolved oxygen in the water sample to be measured is not less than 10 times of the content of dissolved hydrogen, and the dissolved hydrogen is completely reacted in the palladium catalytic resin column 8; an auxiliary unit consisting of a demineralized water tank 6 and an injection pump 5 is connected with the main measuring flow path through a stainless steel tee joint 4; the dissolved oxygen meter 10 is a detection unit of the measuring device, and analyzes and detects the change of the dissolved oxygen in the water sample before and after the redox resin column; the dissolved oxygen meter 10 is used as a monitoring instrument, the meter is in double-channel configuration, and is connected with two dissolved oxygen electrodes and the dissolved oxygen flow cell 7. The dissolved oxygen flow cell 7 is respectively positioned behind the stainless steel tee joint 4 and the palladium catalytic resin column 8, and directly monitors the change of the dissolved oxygen content in the water sample in front of and behind the palladium catalytic resin column 8; the programmable controller 11 is an analysis and control unit of the measuring device, and the programmable controller 11 can receive signals of the dissolved oxygen meter 10 and the injection pump 5 at the same time, and analyze the content of the dissolved hydrogen in the water sample according to the measured value of the dissolved oxygen meter 10, thereby indicating whether the current superheater and the reheater are in an overtemperature state or not and giving corresponding warning signals. According to the signal of the injection pump 5, the programmable controller 11 controls the start, stop and switching of two injectors of the injection pump 5, and ensures that the two injectors are in a dosing state in real time.
The dissolved hydrogen content measuring device in the high-temperature high-pressure steam of the embodiment can be applied to the monitoring of the dissolved hydrogen content in the main steam, the reheated steam and the superheated steam of the power plant, can monitor the overtemperature condition of the pipe wall of the superheater and the reheater in real time, and has an important early warning effect on preventing the superheater and the reheater from being exploded.
And will be apparent to those skilled in the art from the foregoing description.
In addition, it should be noted that the specific embodiments described in the present specification may be different in the components, the shapes of the components, the names of the components, and the like, and the above description is only an example of the structure of the present invention. All the equivalent changes or simple changes made according to the structure, characteristics and principle of the utility model are included in the protection scope of the utility model. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (7)
1. The utility model provides a dissolved hydrogen content measuring device in high temperature high pressure steam, is including sample and the flow control unit that is used for controlling the water sample flow that awaits measuring, sample and flow control unit are including consecutive sampling tube way, needle valve and flowmeter, its characterized in that: the device comprises a sodium type resin column, a stainless steel tee joint, an injection pump, a desalting water tank, a dissolved oxygen meter flow cell, a palladium catalytic resin column, a dissolved oxygen meter and a programmable controller, wherein the sodium type resin column is connected with a sampling and flow control unit, the dissolved oxygen meter flow cell comprises a dissolved oxygen meter flow cell I and a dissolved oxygen meter flow cell II, one end of the stainless steel tee joint is connected with the sodium type resin column, the other two ends of the stainless steel tee joint are respectively connected with the dissolved oxygen meter flow cell I and an injection pump outlet, the other end of the injection pump is connected with the desalting water tank, the dissolved oxygen meter is connected with the dissolved oxygen meter flow cell through an electrode and an electrode wire, the injection pump is connected with the programmable controller through a signal wire, the palladium catalytic resin column is positioned between the two dissolved oxygen meter flow cells, the water discharged from the dissolved oxygen meter flow cell II enters a drainage tank of a unit, the two dissolved oxygen electrodes share one transmitter, the transmitter and the injection pump are connected with the programmable controller .
2. The apparatus for measuring the content of dissolved hydrogen in high-temperature high-pressure steam according to claim 1, wherein: the sodium type resin column is a sodium type cation exchange column, the sodium type resin column is arranged between the flowmeter and the stainless steel tee joint, the exchange column is made of organic glass, the sodium ion exchange resin is macroporous color-changing resin, the length of the exchange column is not less than 0.6m, the flow velocity of a water sample in the exchange column is not more than 18m/h, and an automatic exhaust valve is arranged at the top of the exchange column.
3. The apparatus for measuring the content of dissolved hydrogen in high-temperature high-pressure steam according to claim 1, wherein: the palladium catalytic resin column is arranged between the two dissolved oxygen flow tanks, the exchange column is made of organic glass, the length of the exchange column is not less than 0.6m, and the flow velocity of a water sample in the exchange column is not more than 18 m/h.
4. The apparatus for measuring the content of dissolved hydrogen in high-temperature high-pressure steam according to claim 1, wherein: the dissolved oxygen meter is used for measuring low-content dissolved oxygen in ultrapure water, and the working error of the whole machine is not more than 3.0 mu g/L.
5. The apparatus for measuring the content of dissolved hydrogen in high-temperature high-pressure steam according to claim 1, wherein: the stainless steel tee joint and the demineralized water tank are made of stainless steel materials, the volume of the demineralized water tank is 100L, the injection pump comprises two independent infusion channels, the specification of the injector is not less than 50mL, and the two infusion channels are controlled by the programmable controller to be automatically switched and filled with liquid.
6. The apparatus for measuring the content of dissolved hydrogen in high-temperature high-pressure steam according to claim 1, wherein: the sampling pipeline and the needle valve are both made of stainless steel.
7. The apparatus for measuring the content of dissolved hydrogen in high-temperature high-pressure steam according to claim 1, wherein: the flow meter is made of organic glass materials, and the measuring range of the flow meter is 0L/h-30L/h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021562508.8U CN212658669U (en) | 2020-07-31 | 2020-07-31 | Device for measuring content of dissolved hydrogen in high-temperature and high-pressure steam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021562508.8U CN212658669U (en) | 2020-07-31 | 2020-07-31 | Device for measuring content of dissolved hydrogen in high-temperature and high-pressure steam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212658669U true CN212658669U (en) | 2021-03-05 |
Family
ID=74769009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021562508.8U Active CN212658669U (en) | 2020-07-31 | 2020-07-31 | Device for measuring content of dissolved hydrogen in high-temperature and high-pressure steam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212658669U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117129645A (en) * | 2023-10-26 | 2023-11-28 | 北京华科仪科技股份有限公司 | Data monitoring method and device for dissolved hydrogen in water |
-
2020
- 2020-07-31 CN CN202021562508.8U patent/CN212658669U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117129645A (en) * | 2023-10-26 | 2023-11-28 | 北京华科仪科技股份有限公司 | Data monitoring method and device for dissolved hydrogen in water |
| CN117129645B (en) * | 2023-10-26 | 2024-01-26 | 北京华科仪科技股份有限公司 | Data monitoring method and device for dissolved hydrogen in water |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103674156A (en) | Metering device and metering method of laboratory trace gases | |
| CN212658669U (en) | Device for measuring content of dissolved hydrogen in high-temperature and high-pressure steam | |
| CN105223128A (en) | The power station flowing accelerated corrosion simulated experiment piping installation of electrochemical measurement mode | |
| CN105467063A (en) | Test device for detecting comprehensive performance of denitration catalyst and application method thereof | |
| CN101183087A (en) | Trace quantity dissolved oxygen instrument test calibration system and calibrate method thereof | |
| CN112213439A (en) | Device and method for measuring content of dissolved hydrogen in high-temperature high-pressure steam | |
| CN113295486A (en) | Preparation method of standard solution for online detection of pH meter | |
| CN213517098U (en) | Power plant water quality on-line instrument evaluation test device | |
| CN107941886B (en) | Real-time oxidation-reduction monitoring device for water supply system of thermal power plant and application method | |
| CN111426623B (en) | Device for simulating high-temperature corrosion environment of biomass and detecting experimental reaction gas in real time | |
| JP5519920B2 (en) | PWR power plant secondary cooling system water treatment system and method | |
| CN211825963U (en) | SO (SO)3Calibration system of standard substance generation and on-line analyzer | |
| CN211603012U (en) | Special pH measuring device for generator inner cooling water system | |
| CN215598814U (en) | Standard solution generating device for online inspection of pH meter | |
| CN203642986U (en) | Metering device of laboratory trace gas | |
| US4887453A (en) | Method and system for on-line calibration and validation of process instrumentation | |
| CN213633267U (en) | High-concentration hydrofluoric acid solution on-line monitoring device | |
| CN214472941U (en) | Device for on-line measurement of sodium content in ammonia water | |
| CN212283587U (en) | Steam generator blowdown ionization desalination membrane stack performance's test system | |
| RU201094U1 (en) | Device for continuous measurement of changes in the electrical conductivity of deionized water in a tank | |
| CN112067682A (en) | Online dissolved oxygen meter zero calibration system and method | |
| CN201780286U (en) | Light-operated metering device | |
| CN111781247A (en) | High-parameter boiler water quality monitoring system and method | |
| CN111007112B (en) | System and method for online measurement of steam humidity based on conductivity method | |
| CN213986437U (en) | Dissolved oxygen and conductivity on-line monitoring device for auxiliary water supply system of nuclear power plant |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |