CN206489457U - Dynamic high-temperature high-pressure steam oxidation test device for controlling oxygen content - Google Patents
Dynamic high-temperature high-pressure steam oxidation test device for controlling oxygen content Download PDFInfo
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- CN206489457U CN206489457U CN201621468786.0U CN201621468786U CN206489457U CN 206489457 U CN206489457 U CN 206489457U CN 201621468786 U CN201621468786 U CN 201621468786U CN 206489457 U CN206489457 U CN 206489457U
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 77
- 239000001301 oxygen Substances 0.000 title claims abstract description 77
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 77
- 238000012360 testing method Methods 0.000 title claims abstract description 49
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 34
- 230000003647 oxidation Effects 0.000 title claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 128
- 239000011261 inert gas Substances 0.000 claims abstract description 33
- 238000010438 heat treatment Methods 0.000 claims description 19
- 238000006243 chemical reaction Methods 0.000 claims description 13
- 239000012498 ultrapure water Substances 0.000 claims description 11
- 238000006392 deoxygenation reaction Methods 0.000 claims description 10
- 239000010865 sewage Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 11
- 238000011161 development Methods 0.000 abstract description 4
- 230000018109 developmental process Effects 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 4
- 238000011160 research Methods 0.000 abstract description 4
- 239000007769 metal material Substances 0.000 abstract description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 6
- 239000007789 gas Substances 0.000 description 4
- 238000009284 supercritical water oxidation Methods 0.000 description 4
- 229910052786 argon Inorganic materials 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 238000010926 purge Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- AYTAKQFHWFYBMA-UHFFFAOYSA-N chromium dioxide Chemical compound O=[Cr]=O AYTAKQFHWFYBMA-UHFFFAOYSA-N 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000011276 addition treatment Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
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Abstract
The utility model discloses a control oxygen content's developments high temperature high pressure steam oxidation test device belongs to the experimental research technical field of metal material in high temperature high pressure water environment, and this test device comprises feedwater subassembly, vacuum deoxidization subassembly, inert gas deoxidization subassembly, normal atmospheric temperature circulating water return circuit and high temperature high pressure circulating water return circuit. Compared with the prior art, the utility model discloses can realize dynamic steam oxidation test under the high temperature high pressure condition, and can real-time supervision and accurate control dissolved oxygen content, dissolved oxygen content can be controlled for a long time below 10ppb, and the deoxidization is efficient simultaneously, and steam oxidation in-process system can automatic operation, need not to watch on, practices thrift manpower and materials.
Description
The technical field is as follows:
the utility model belongs to the technical field of the experimental research of metal material in high temperature high pressure environment, concretely relates to dynamic high temperature high pressure steam oxidation test device of control oxygen content.
Background art:
in the field of thermal power generation, along with increasing attention on energy conservation and environmental protection, unit parameters are continuously improved, and the problem of steam side oxidation of steam circulation parts such as a superheater, a reheater, a high-temperature steam pipeline, a steam turbine rotor, a blade, a nozzle and the like is more and more prominent. The development of suitable test equipment is the key to research and solve the problem of metal steam oxidation, wherein a water chemistry control and circulation system is the core of the equipment, and three key factors are provided for ensuring the test result to be reliable: (1) the oxygen content in the steam or water is controllable, and because the content in the steam can influence the oxide layer structure and the oxidation rate of the material, whether the oxygen content in the steam can be controlled to the steam condition (below 10ppb when the water is subjected to total volatilization treatment and 30 ppb-150 ppb when the water is subjected to oxygen addition treatment) when the thermal power generating unit is in actual operation is a key factor for determining whether the test result is reliable. (2) The steam flow cannot be too low, because H is generated in the steam oxidation reaction process2、CrO2(OH)2When the volatile reaction products are static or the flow rate is too low, the volatile reaction products cannot be taken away in time, the reaction enters an equilibrium state, and the test result cannot truly reflect the steam oxidation resistance of the material. (3) The temperature and pressure should be such that supercritical conditions common to utility boilers are achieved. In addition to these three key conditions, the simplicity, reliability, convenience, energy saving and environmental protection of the system must be considered.
Many research units at home and abroad develop steam or supercritical water oxidation test devices, such as patents: patent CN 10162661B "experimental apparatus for high temperature water vapor oxidation of metal material", and CN 103543096 a "experimental apparatus for dynamic high temperature and high pressure oxidation": the main defects of equipment such as a steam oxidation device of a United states NETL laboratory, a supercritical water oxidation device of the United states Wisconsin-Madison university, a laboratory table of Nippon Steel company in Japan, a supercritical water oxidation experimental device for wastewater treatment of Zhejiang industry university and the like are that key factors such as oxygen content in steam and the like cannot be controlled. Patent application document 200810011845.5 "method and apparatus for conducting long-term oxidative corrosion experiments in supercritical water" medium is static. Patent CN 101118211B "high temperature steam oxidation test apparatus" cannot be used for high pressure, and the condensed water needs to be treated periodically, which consumes a large amount of argon gas. Patent CN 102519863A "a supercritical water steam oxidation test device" has realized the supercritical water oxidation environment, but has following shortcoming: (1) the dissolved oxygen content in water is regulated by setting the flow of argon and oxygen, the regulating range is small and can not reach below 10ppb, and the oxygen content can not be observed and controlled in real time; (2) a heating rod is arranged in the waterway for heating, and then a water cooling sleeve is arranged, so that a large amount of electric energy and tap water are wasted; (3) the structure is complicated, the water circulation system is internally provided with three distilled water tanks with sealing structures, and the water tanks are provided with a drain valve, an observation window, a heating pipe, a heat exchanger and other parts, so that the safety and reliability are poor.
The utility model has the following contents:
the utility model aims at overcoming the above drawback in the loading technique under the current high temperature high pressure environment, provide a dynamic high temperature high pressure steam oxidation test device of control oxygen content.
In order to achieve the above purpose, the utility model adopts the following technical scheme to realize:
the dynamic high-temperature high-pressure steam oxidation test device for controlling the oxygen content comprises a water supply assembly, a vacuum deoxygenation assembly, an inert gas deoxygenation assembly, a normal-temperature circulating water loop, a high-temperature high-pressure water loop, a high-pressure reaction kettle and a heating assembly; wherein,
the water supply component comprises a water storage barrel, and a pipeline at the top of the water storage barrel is communicated with the atmosphere through a back pressure valve A and a check valve A in sequence;
the vacuum oxygen removal assembly comprises a vacuum pump;
the inert gas deoxidizing component comprises a proportional solenoid valve, a one-way valve B and an inert gas cylinder;
the normal temperature circulating water loop comprises a circulating pump, a flow cell and a dissolved oxygen meter;
the high-temperature and high-pressure water loop comprises a high-pressure metering pump, a damper, a heat exchanger, a condenser and a back pressure valve B;
the high-pressure reaction kettle and the heating assembly comprise a kettle body heating furnace and a high-pressure reaction kettle;
wherein, the vacuum pump is communicated with the water storage barrel through a pipeline;
the inert gas cylinder is communicated with the inert gas inlet of the water storage barrel through a pipeline, a one-way valve B and a proportional electromagnetic valve which are arranged on the pipeline;
the circulation tank forms a normal temperature circulating water loop with the water storage barrel through a pipeline, a circulating pump and a dissolved oxygen meter which are arranged on the pipeline;
the high-pressure metering pump, the damper, the heat exchanger, the condenser and the back pressure valve form a high-temperature and high-pressure water loop with the water storage barrel through pipelines;
the high-pressure reaction kettle is arranged in the kettle body heating furnace, and the kettle body heating furnace and the heat exchanger form a water circulation loop through a pipeline.
The utility model discloses a further improvement lies in, and the water supply subassembly still includes high pure water machine and feed pump, and the feed pump is arranged in adding the high pure water of preparing high pure water machine to the water storage bucket.
The utility model discloses a further improvement lies in, and the water supply subassembly still includes the drain that sets up in water storage barrel head portion to and set up the fluviograph to the side of the water storage bucket.
The utility model discloses a further improvement lies in, vacuum deoxidization subassembly still including setting up the manometer A on the pipeline that vacuum pump and water storage bucket are linked together.
The utility model discloses further improvement lies in, and the inert gas cylinder still includes the dissolved oxygen control system that is connected through signal line and dissolved oxygen meter and proportion solenoid valve.
The utility model discloses a further improvement lies in, and normal atmospheric temperature circulating water return circuit is still including setting up the valve on the pipeline.
The utility model discloses further improvement lies in, is equipped with dissolved oxygen sensor in the flow cell, and dissolved oxygen sensor's signal is integrated into 4-20 mA's current signal through dissolved oxygen table, and this current signal transmits dissolved oxygen control system, dissolved oxygen control system calculate 4-20mA control signal according to actual measurement dissolved oxygen value and settlement dissolved oxygen value, on exporting the proportion solenoid valve, control its on-off ratio, and then control inert gas lets in the volume.
The utility model discloses further improvement lies in, high temperature and high pressure water return circuit still including setting up check valve C, manometer B, first filter and the relief valve on the pipeline.
The utility model discloses further improvement lies in, and high temperature and high pressure water return circuit still includes the cold water machine, and this cold water machine passes through the pipeline and forms water circulation circuit with the condenser.
Compared with the prior art, the utility model discloses well water supply assembly provides high pure water for test device, and dissolved oxygen content in vacuum deoxidization subassembly, inert gas deoxidization subassembly and normal atmospheric temperature circulating water circuit three cooperation accurate control return circuit, high temperature high pressure return circuit and high pressure batch autoclave and heating element realize dynamic circulation simultaneously for steam oxidation test provides high temperature high pressure environment. Particularly, the utility model discloses test device's beneficial effect lies in:
1. the utility model discloses dissolved oxygen content in testing device passes through dissolved oxygen control system control circuit, and accurate control dissolved oxygen content can be for a long time below 10 ppb.
2. The utility model discloses a mode deoxidization that vacuum deoxidization subassembly and inert gas deoxidization subassembly combined together has improved deoxidization efficiency, and the cost is practiced thrift to the inert gas's that can significantly reduce use amount simultaneously.
3. The utility model discloses pressure in the high temperature and high pressure water return circuit can be adjusted through high-pressure measuring pump and back pressure valve to the test device between 0 to 40MPa, and the temperature can be controlled by cauldron body heating furnace between room temperature to 800 ℃, can satisfy different test condition demands.
4. The utility model discloses a heat transfer that one set of heat exchanger goes out high temperature water in with most high-pressure batch autoclave is intake for the low temperature, both can reduce calorific loss like this, and the energy saving can make the leaving water temperature show again and reduce, goes out water and falls to the normal atmospheric temperature behind the condenser again, gets back to automatic cycle recycle in the water storage bucket after the filter filters.
Description of the drawings:
FIG. 1 is a schematic structural diagram of the dynamic high-temperature high-pressure steam oxidation test device for controlling oxygen content according to the present invention.
In the figure: 1 is a high-purity water machine; 2 is a water supply pump; 3 is a water storage barrel; 4 is a back pressure valve A; 5 is a check valve A; 6 is a sewage draining outlet; 7 is a water level meter; 8 is a vacuum pump; 9 is a pressure gauge A; 10 is a proportional electromagnetic valve; 11 is a second filter; 12 is a check valve B; 13 is an inert gas cylinder; 14 is a dissolved oxygen control system; 15 is a circulating pump; 16 is a valve; 17 is a flow-through cell; 18 is a dissolved oxygen meter; 19 is a high-pressure metering pump; 20 is a damper; 21 is a check valve C; 22 is a heat exchanger; 23 is a kettle body heating furnace; 24 is a high-pressure reaction kettle; 25 is a condenser; 26 is a pressure gauge B; 27 is a first filter; 28 is a back pressure valve B; 29 is a pressure release valve; 30 is a water chiller.
The specific implementation mode is as follows:
the present invention will be described in further detail with reference to the accompanying drawings.
As shown in figure 1, the utility model relates to a control oxygen content's developments high temperature high pressure steam oxidation test device, including feedwater subassembly, vacuum deoxidization subassembly, inert gas deoxidization subassembly, normal atmospheric temperature circulating water return circuit and high temperature high pressure water return circuit. The specific installation steps are as follows:
the water supply assembly comprises a high-purity water machine 1, a water supply pump 2 and a water storage barrel 3, wherein the high-purity water machine 1, the water supply pump 2 and the water storage barrel 3 are sequentially connected.
The vacuum deoxidizing component comprises a vacuum pump 8 and a pressure gauge A9, the vacuum pump 8 is communicated with the water storage barrel 3 through a pipeline, and the pipeline is provided with the pressure gauge A9.
The top of the water storage barrel 3 is provided with a pipeline which is connected with the atmosphere through a back pressure valve A4 and a check valve A5 in sequence. A sewage outlet 6 is arranged at the bottom of the water storage barrel 3, and a water level gauge 7 is arranged on the side surface.
The bottom of the water storage barrel 3 is sequentially connected with a proportional electromagnetic valve 10, a second filter 11, a one-way valve B12 and an inert gas cylinder 13 through pipelines.
The normal temperature circulating water loop is formed by sequentially connecting a valve 16, a circulating pump 15, a circulating pool 17 and a dissolved oxygen meter 18 through pipelines and then returning the loop to the top of the water storage barrel 3.
The system comprises a high-pressure metering pump 19, a damper 20, a one-way valve C21, a cold end of a heat exchanger 22, a kettle body heating furnace 23, a high-pressure reaction kettle 24, a hot end of the heat exchanger 22, a condenser 25, a pressure gauge B26, a first filter 27 and a back pressure valve B28 which are connected through pipelines, wherein the condenser is connected with a water cooler 29. The connecting pipelines of the high-temperature and high-pressure water loop are all metal clamping sleeves.
When a high-temperature steam oxidation test is carried out, firstly, an outlet valve of the water feeding pump 2 is opened, and high-purity water prepared by the high-purity water machine 1 is added into the water storage barrel 3. Then the valve of the vacuum deoxygenation component is opened to vacuumize the water storage barrel 3, most of air dissolved in high-purity water can be discharged, the content of dissolved oxygen in the water is reduced to about 500ppb, then the inert gas deoxygenation component and the normal-temperature circulating water loop are opened, and deoxygenation is carried out by introducing inert gas such as argon into the water storage barrel 3. A dissolved oxygen sensor is arranged in a flow cell 17 in the normal temperature water loop, signals of the sensor are integrated into 4-20mA current signals through a dissolved oxygen meter 18, a dissolved oxygen control system 14 calculates 4-20mA control signals according to an actual dissolved oxygen value and a set dissolved oxygen value, the control signals are output to a proportional solenoid valve 10 to control the switching ratio of the proportional solenoid valve, when the actual dissolved oxygen content is higher than the set upper limit, the proportional solenoid valve 10 is opened, inert gas is introduced into a water storage barrel 3, water in the water storage barrel 3 is purged to remove oxygen, and escaped gas is discharged into the atmosphere through a back pressure valve A4 and a check valve A5. When the measured dissolved oxygen content is higher than the upper limit of the set value, the proportional solenoid valve 10 is closed, the inert gas purging is stopped, and the normal test can be started. The back pressure valve A4 and the check valve A5 ensure that the water storage barrel 3 is in a micro positive pressure state under the inert gas environment, and prevent the dissolved oxygen from rising again. And then opening a high-temperature high-pressure circulating water loop, adjusting the high-pressure metering pump 19 and the backpressure valve B28 to enable the pressure in the loop to reach the expected pressure parameter of the test, then opening the programmable control kettle body heating furnace 23 to heat up, raising the temperature in the loop to the expected temperature parameter of the test, and then starting the test.
The utility model discloses a heat transfer that one set of heat exchanger 22 goes out high temperature water in with most high-pressure batch autoclave is intake for the low temperature, so both can reduce calorific loss, and the energy saving can make the leaving water temperature show again and reduce, makes the gas temperature who gets into condenser 25 reduce, practices thrift the required electric energy of cold water machine 30, later gets back to the water storage tank after the filter filters and recycles. The pressure in the high-temperature high-pressure loop is controlled by a high-pressure metering pump 19 and a back pressure valve B28, and when the pressure is over-pressurized in the test process, the pressure can be relieved through a pressure relief valve 29, so that the safety is ensured. The inert gas deoxidization subassembly is in the on-state all the time in the test process, guarantees that dissolved oxygen content controls all the time in the return circuit and sets for the dissolved oxygen within range, because whole experimental apparatus keeps malleation and encapsulated situation, but greatly reduced deoxidization is with inert gas's consumption.
The utility model discloses control oxygen content's developments high temperature high pressure steam oxidation test device's application method, including following step:
1) firstly, opening an outlet valve of a water feeding pump 2, and adding high-purity water prepared by a high-purity water machine 1 into a water storage barrel 3;
2) opening a valve of the vacuum deoxidizing component to vacuumize the water storage barrel 3;
3) opening the inert gas deoxygenation assembly and the normal-temperature circulating water loop, when the dissolved oxygen content measured by the dissolved oxygen meter 18 is higher than the upper limit of a set value, opening the proportional solenoid valve 10, purging the water in the water storage barrel 3 by using inert gas to deoxygenate, discharging the escaped gas into the atmosphere through a backpressure valve A4 and a check valve A5, and when the dissolved oxygen content measured by the dissolved oxygen meter 18 is higher than the upper limit of the set value, closing the proportional solenoid valve 10 and stopping purging by using the inert gas;
4) opening a high-temperature high-pressure circulating water loop, and adjusting the high-pressure metering pump 19 and the backpressure valve B28 to enable the pressure in the loop to reach the expected pressure parameter of the test;
5) and opening a programmable control kettle body heating furnace 23 to increase the temperature, increasing the temperature in the loop to the expected temperature parameter for testing, and starting the test.
The utility model discloses the experimental order of test device's application method is arranged rationally, particularly, the utility model discloses application method's beneficial effect lies in:
1. the vacuum pump through among the vacuum deoxidization subassembly earlier gets rid of the dissolved oxygen of a large amount of aquatic to the water storage bucket evacuation, recycles inert gas further deoxidization afterwards, can improve deoxidization efficiency, and the while can the greatly reduced inert gas's use amount practices thrift the test cost.
2. The pressure of the high-pressure kettle is increased to the expected temperature parameter of the test, the back pressure valve B is adjusted to be the expected pressure parameter of the test, and finally the high-pressure metering pump is opened to introduce water into the high-pressure reaction kettle, so that the pressure in the high-pressure reaction kettle can be gradually increased to the expected pressure parameter, and the method is safer and more reliable.
To sum up, the utility model relates to an it is ingenious, contrast with prior art, the utility model discloses can realize dynamic steam oxidation test under high temperature high pressure condition, and can real-time supervision and accurate control dissolved oxygen content, dissolved oxygen content can long-term control below 10ppb, and the deoxidization is efficient simultaneously, and steam oxidation test in-process system can automatic operation, need not to watch on, practices thrift manpower and materials.
Claims (9)
1. The dynamic high-temperature high-pressure steam oxidation test device for controlling the oxygen content is characterized by comprising a water supply assembly, a vacuum deoxygenation assembly, an inert gas deoxygenation assembly, a normal-temperature circulating water loop, a high-temperature high-pressure water loop, a high-pressure reaction kettle and a heating assembly; wherein,
the water supply component comprises a water storage barrel (3), and a pipeline at the top of the water storage barrel (3) is communicated with the atmosphere sequentially through a back pressure valve A (4) and a one-way valve A (5);
the vacuum deoxygenation assembly comprises a vacuum pump (8);
the inert gas deoxygenation assembly comprises a proportional solenoid valve (10), a one-way valve B (12) and an inert gas cylinder (13);
the normal temperature circulating water loop comprises a circulating pump (15), a circulating pool (17) and a dissolved oxygen meter (18);
the high-temperature and high-pressure water loop comprises a high-pressure metering pump (19), a damper (20), a heat exchanger (22), a condenser (25) and a backpressure valve B (28);
the high-pressure reaction kettle and the heating assembly comprise a kettle body heating furnace (23) and a high-pressure reaction kettle (24);
wherein, the vacuum pump (8) is communicated with the water storage barrel (3) through a pipeline;
the inert gas cylinder (13) is communicated with an inert gas inlet of the water storage barrel (3) through a pipeline, a one-way valve B (12) and a proportional solenoid valve (10) which are arranged on the pipeline;
the circulation pool (17) forms a normal temperature circulation water loop with the water storage barrel (3) through a pipeline, a circulation pump (15) and a dissolved oxygen meter (18) which are arranged on the pipeline;
a high-pressure metering pump (19), a damper (20), a heat exchanger (22), a condenser (25) and a backpressure valve B (28) form a high-temperature and high-pressure water loop with the water storage barrel (3) through pipelines;
the high-pressure reaction kettle (24) is arranged in the kettle body heating furnace (23), and the kettle body heating furnace (23) and the heat exchanger (22) form a water circulation loop through a pipeline.
2. The dynamic high-temperature high-pressure steam oxidation test device for controlling oxygen content according to claim 1, wherein the water supply assembly further comprises a high-purity water machine (1) and a water supply pump (2), and the water supply pump (2) is used for adding high-purity water prepared by the high-purity water machine (1) into the water storage barrel (3).
3. The dynamic high-temperature high-pressure steam oxidation test device for controlling oxygen content according to claim 1, wherein the water supply assembly further comprises a sewage draining outlet (6) arranged at the bottom of the water storage barrel (3) and a water level gauge (7) arranged at the side of the water storage barrel (3).
4. The dynamic high-temperature high-pressure steam oxidation test device for controlling oxygen content according to claim 1, wherein the vacuum oxygen removal assembly further comprises a pressure gauge A (9) arranged on a pipeline of the vacuum pump (8) communicated with the water storage barrel (3).
5. The dynamic high-temperature high-pressure steam oxidation test device for controlling oxygen content according to claim 1, characterized in that the inert gas cylinder (13) further comprises a dissolved oxygen control system (14) connected with the dissolved oxygen meter (18) and the proportional solenoid valve (10) through signal lines.
6. The dynamic high-temperature high-pressure steam oxidation test device for controlling oxygen content according to claim 1, wherein the normal-temperature circulating water loop further comprises a valve (16) arranged on the pipeline.
7. The dynamic high-temperature high-pressure steam oxidation test device for controlling oxygen content according to claim 1, characterized in that a dissolved oxygen sensor is arranged in the flow cell (17), the signal of the dissolved oxygen sensor is integrated into a current signal of 4-20mA through a dissolved oxygen meter (18), the current signal is transmitted to the dissolved oxygen control system (14), the dissolved oxygen control system (14) calculates a 4-20mA control signal according to the measured dissolved oxygen value and the set dissolved oxygen value, and outputs the 4-20mA control signal to the proportional solenoid valve (10) to control the on-off proportion of the proportional solenoid valve, thereby controlling the introduction amount of the inert gas.
8. The dynamic high-temperature high-pressure steam oxidation test device for controlling oxygen content according to claim 1, wherein the high-temperature high-pressure water loop further comprises a one-way valve C (21), a pressure gauge B (26), a first filter (27) and a pressure relief valve (29) which are arranged on the pipeline.
9. The dynamic high-temperature high-pressure steam oxidation test device for controlling oxygen content according to claim 1, wherein the high-temperature high-pressure water loop further comprises a water chiller (30), and the water chiller (30) and the condenser (25) form a water circulation loop through a pipeline.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106708111A (en) * | 2016-12-29 | 2017-05-24 | 华能国际电力股份有限公司 | Dynamic high-temperature high-pressure steam oxidation test device for controlling oxygen content and use method |
| CN108195688A (en) * | 2018-02-26 | 2018-06-22 | 华能国际电力股份有限公司 | Internal pressure creep test device and method for simulating service environment of boiler pipe of coal-fired power plant |
-
2016
- 2016-12-29 CN CN201621468786.0U patent/CN206489457U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106708111A (en) * | 2016-12-29 | 2017-05-24 | 华能国际电力股份有限公司 | Dynamic high-temperature high-pressure steam oxidation test device for controlling oxygen content and use method |
| CN108195688A (en) * | 2018-02-26 | 2018-06-22 | 华能国际电力股份有限公司 | Internal pressure creep test device and method for simulating service environment of boiler pipe of coal-fired power plant |
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